64653656 has 48 divisors (see below), whose sum is σ = 130393440. Its totient is φ = 30041280.

The previous prime is 64653647. The next prime is 64653671. The reversal of 64653656 is 65635646.

It is a happy number.

64653656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 175985 + ... + 176351.

It is an arithmetic number, because the mean of its divisors is an integer number (2716530).

Almost surely, 2^64653656 is an apocalyptic number.

It is an amenable number.

64653656 is an abundant number, since it is smaller than the sum of its proper divisors (65739784).

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

64653656 is a wasteful number, since it uses less digits than its factorization.

64653656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 449 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 64653656 is about 8040.7497162889. The cubic root of 64653656 is about 401.3571733268.

The spelling of 64653656 in words is "sixty-four million, six hundred fifty-three thousand, six hundred fifty-six".