64655656 has 32 divisors (see below), whose sum is σ = 131040000. Its totient is φ = 29730240.

The previous prime is 64655629. The next prime is 64655659. The reversal of 64655656 is 65655646.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64655659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31345 + ... + 33343.

It is an arithmetic number, because the mean of its divisors is an integer number (4095000).

Almost surely, 2^64655656 is an apocalyptic number.

It is an amenable number.

64655656 is an abundant number, since it is smaller than the sum of its proper divisors (66384344).

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

64655656 is a wasteful number, since it uses less digits than its factorization.

64655656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329 (or 2325 counting only the distinct ones).

The product of its digits is 648000, while the sum is 43.

The square root of 64655656 is about 8040.8740818396. The cubic root of 64655656 is about 401.3613118196.

It can be divided in two parts, 6465 and 5656, that added together give a palindrome (12121).

The spelling of 64655656 in words is "sixty-four million, six hundred fifty-five thousand, six hundred fifty-six".