3651606 has 48 divisors (see below), whose sum is σ = 9189024. Its totient is φ = 1026432.

The previous prime is 3651559. The next prime is 3651607. The reversal of 3651606 is 6061563.

3651606 is a `hidden beast` number, since 3 + 6 + 51 + 606 = 666.

3651606 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3651606 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 3651606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9000 + ... + 9396.

It is an arithmetic number, because the mean of its divisors is an integer number (191438).

Almost surely, 2^3651606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4594512).

3651606 is an abundant number, since it is smaller than the sum of its proper divisors (5537418).

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

3651606 is a wasteful number, since it uses less digits than its factorization.

3651606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3651606 is about 1910.9175806403. The cubic root of 3651606 is about 153.9907511171.

The spelling of 3651606 in words is "three million, six hundred fifty-one thousand, six hundred six".