64157656 has 16 divisors (see below), whose sum is σ = 121944600. Its totient is φ = 31639104.

The previous prime is 64157651. The next prime is 64157701. The reversal of 64157656 is 65675146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157651) 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 3 ways as a sum of consecutive naturals, for example, 54346 + ... + 55513.

Almost surely, 2^64157656 is an apocalyptic number.

It is an amenable number.

64157656 is a deficient number, since it is larger than the sum of its proper divisors (57786944).

64157656 is a wasteful number, since it uses less digits than its factorization.

64157656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109938 (or 109934 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 64157656 is about 8009.8474392463. The cubic root of 64157656 is about 400.3281806700.

The spelling of 64157656 in words is "sixty-four million, one hundred fifty-seven thousand, six hundred fifty-six".