3654 has 24 divisors (see below), whose sum is σ = 9360. Its totient is φ = 1008.

The previous prime is 3643. The next prime is 3659. The reversal of 3654 is 4563.

3654 = T_{1} + T_{2} + ... +
T_{27}.

It is a happy number.

3654 is nontrivially palindromic in base 13.

3654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

3654 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

3654 is a nontrivial binomial coefficient, being equal to C(29, 3).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

3654 is a modest number, since divided by 54 gives 36 as remainder.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number *n* which divided by its sum of digits gives 3654.

It is not an unprimeable number, because it can be changed into a prime (3659) by changing a digit.

It is the 27-th tetrahedral number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112 + ... + 140.

It is an arithmetic number, because the mean of its divisors is an integer number (390).

2^{3654} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4680).

3654 is an abundant number, since it is smaller than the sum of its proper divisors (5706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3654 is a wasteful number, since it uses less digits than its factorization.

3654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44 (or 41 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 3654 is about 60.4483250388. The cubic root of 3654 is about 15.4024395978.

Subtracting 3654 from its reverse (4563), we obtain a palindrome (909).

The spelling of 3654 in words is "three thousand, six hundred fifty-four".

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