656343656 has 32 divisors (see below), whose sum is σ = 1271911680. Its totient is φ = 317193600.

The previous prime is 656343641. The next prime is 656343661.

656343656 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×656343656³ (a number of 27 digits) contains 333 as substring.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 366395 + ... + 368181.

It is an arithmetic number, because the mean of its divisors is an integer number (39747240).

Almost surely, 2^656343656 is an apocalyptic number.

It is an amenable number.

656343656 is a deficient number, since it is larger than the sum of its proper divisors (615568024).

656343656 is a wasteful number, since it uses less digits than its factorization.

656343656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305 (or 3301 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 44.

The square root of 656343656 is about 25619.2048276288. The cubic root of 656343656 is about 869.0479990331.

The spelling of 656343656 in words is "six hundred fifty-six million, three hundred forty-three thousand, six hundred fifty-six".