3656969256 has 32 divisors (see below), whose sum is σ = 9146633760. Its totient is φ = 1218428352.

The previous prime is 3656969243. The next prime is 3656969257. The reversal of 3656969256 is 6529696563.

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

It is a junction number, because it is equal to n+sod(n) for n = 3656969196 and 3656969205.

It is not an unprimeable number, because it can be changed into a prime (3656969257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19866 + ... + 87798.

It is an arithmetic number, because the mean of its divisors is an integer number (285832305).

Almost surely, 2^3656969256 is an apocalyptic number.

It is an amenable number.

3656969256 is an abundant number, since it is smaller than the sum of its proper divisors (5489664504).

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

3656969256 is a wasteful number, since it uses less digits than its factorization.

3656969256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70185 (or 70181 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 57.

The square root of 3656969256 is about 60472.8803349072. The cubic root of 3656969256 is about 1540.6610497600.

The spelling of 3656969256 in words is "three billion, six hundred fifty-six million, nine hundred sixty-nine thousand, two hundred fifty-six".