64656156 has 12 divisors (see below), whose sum is σ = 150864392. Its totient is φ = 21552048.

The previous prime is 64656149. The next prime is 64656169. The reversal of 64656156 is 65165646.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693995 + ... + 2694018.

Almost surely, 2^64656156 is an apocalyptic number.

It is an amenable number.

64656156 is an abundant number, since it is smaller than the sum of its proper divisors (86208236).

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

64656156 is a wasteful number, since it uses less digits than its factorization.

64656156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388020 (or 5388018 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 64656156 is about 8040.9051729267. The cubic root of 64656156 is about 401.3623464295.

It can be divided in two parts, 6465 and 6156, that added together give a palindrome (12621).

The spelling of 64656156 in words is "sixty-four million, six hundred fifty-six thousand, one hundred fifty-six".