64200257 has 8 divisors (see below), whose sum is σ = 70405632. Its totient is φ = 58056400.

The previous prime is 64200233. The next prime is 64200277. The reversal of 64200257 is 75200246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64200257 - 2⁸ = 64200001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64200277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13178 + ... + 17379.

It is an arithmetic number, because the mean of its divisors is an integer number (8800704).

Almost surely, 2^64200257 is an apocalyptic number.

It is an amenable number.

64200257 is a deficient number, since it is larger than the sum of its proper divisors (6205375).

64200257 is a wasteful number, since it uses less digits than its factorization.

64200257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30759.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 64200257 is about 8012.5062870490. The cubic root of 64200257 is about 400.4167676942.

The spelling of 64200257 in words is "sixty-four million, two hundred thousand, two hundred fifty-seven".