3654009 has 12 divisors (see below), whose sum is σ = 5421156. Its totient is φ = 2369952.

The previous prime is 3653999. The next prime is 3654017. The reversal of 3654009 is 9004563.

It is a happy number.

3654009 is a `hidden beast` number, since 3 + 654 + 0 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2732409 + 921600 = 1653^2 + 960^2 .

It is not a de Polignac number, because 3654009 - 2⁵ = 3653977 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5154 + ... + 5819.

It is an arithmetic number, because the mean of its divisors is an integer number (451763).

Almost surely, 2^3654009 is an apocalyptic number.

It is an amenable number.

3654009 is a deficient number, since it is larger than the sum of its proper divisors (1767147).

3654009 is a wasteful number, since it uses less digits than its factorization.

3654009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11016 (or 11013 counting only the distinct ones).

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

The square root of 3654009 is about 1911.5462327655. The cubic root of 3654009 is about 154.0245224344.

It can be divided in two parts, 36 and 54009, that added together give a palindrome (54045).

The spelling of 3654009 in words is "three million, six hundred fifty-four thousand, nine".