3656965 has 16 divisors (see below), whose sum is σ = 4773888. Its totient is φ = 2673216.

The previous prime is 3656953. The next prime is 3656981. The reversal of 3656965 is 5696563.

It is not a de Polignac number, because 3656965 - 2⁷ = 3656837 is a prime.

It is a super-2 number, since 2×3656965² = 26746786022450, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8034 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (298368).

Almost surely, 2^3656965 is an apocalyptic number.

It is an amenable number.

3656965 is a deficient number, since it is larger than the sum of its proper divisors (1116923).

3656965 is a wasteful number, since it uses less digits than its factorization.

3656965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588.

The product of its digits is 145800, while the sum is 40.

The square root of 3656965 is about 1912.3192725066. The cubic root of 3656965 is about 154.0660452083.

The spelling of 3656965 in words is "three million, six hundred fifty-six thousand, nine hundred sixty-five".