257672207 has 8 divisors (see below), whose sum is σ = 277693584. Its totient is φ = 237679488.

The previous prime is 257672201. The next prime is 257672209. The reversal of 257672207 is 702276752.

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 257672207 - 2¹⁴ = 257655823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257672201) 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, 13808 + ... + 26570.

It is an arithmetic number, because the mean of its divisors is an integer number (34711698).

Almost surely, 2^257672207 is an apocalyptic number.

257672207 is a deficient number, since it is larger than the sum of its proper divisors (20021377).

257672207 is a wasteful number, since it uses less digits than its factorization.

257672207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14329.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 257672207 is about 16052.1714107469. The cubic root of 257672207 is about 636.3399542931.

The spelling of 257672207 in words is "two hundred fifty-seven million, six hundred seventy-two thousand, two hundred seven".