64757985 has 24 divisors (see below), whose sum is σ = 109362240. Its totient is φ = 32717088.

The previous prime is 64757941. The next prime is 64758007. The reversal of 64757985 is 58975746.

It is not a de Polignac number, because 64757985 - 2⁶ = 64757921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 565 + ... + 11394.

It is an arithmetic number, because the mean of its divisors is an integer number (4556760).

Almost surely, 2^64757985 is an apocalyptic number.

It is an amenable number.

64757985 is a deficient number, since it is larger than the sum of its proper divisors (44604255).

64757985 is a wasteful number, since it uses less digits than its factorization.

64757985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12005 (or 11986 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The square root of 64757985 is about 8047.2346181778. The cubic root of 64757985 is about 401.5729419431.

The spelling of 64757985 in words is "sixty-four million, seven hundred fifty-seven thousand, nine hundred eighty-five".