64024257 has 32 divisors (see below), whose sum is σ = 97200000. Its totient is φ = 37130240.

The previous prime is 64024253. The next prime is 64024277. The reversal of 64024257 is 75242046.

It is a cyclic number.

It is not a de Polignac number, because 64024257 - 2² = 64024253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64024253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142369 + ... + 142817.

It is an arithmetic number, because the mean of its divisors is an integer number (3037500).

Almost surely, 2^64024257 is an apocalyptic number.

It is an amenable number.

64024257 is a deficient number, since it is larger than the sum of its proper divisors (33175743).

64024257 is a wasteful number, since it uses less digits than its factorization.

64024257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 64024257 is about 8001.5159188744. The cubic root of 64024257 is about 400.0505290334.

The spelling of 64024257 in words is "sixty-four million, twenty-four thousand, two hundred fifty-seven".