3649656 has 32 divisors (see below), whose sum is σ = 9349200. Its totient is φ = 1186560.

The previous prime is 3649637. The next prime is 3649669. The reversal of 3649656 is 6569463.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871 + ... + 2838.

Almost surely, 2^3649656 is an apocalyptic number.

It is an amenable number.

3649656 is an abundant number, since it is smaller than the sum of its proper divisors (5699544).

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

3649656 is a wasteful number, since it uses less digits than its factorization.

3649656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759 (or 3755 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 3649656 is about 1910.4072864183. The cubic root of 3649656 is about 153.9633352868.

The spelling of 3649656 in words is "three million, six hundred forty-nine thousand, six hundred fifty-six".