257697134 has 8 divisors (see below), whose sum is σ = 386760528. Its totient is φ = 128776960.

The previous prime is 257697113. The next prime is 257697149. The reversal of 257697134 is 431796752.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31187 + ... + 38574.

It is an arithmetic number, because the mean of its divisors is an integer number (48345066).

Almost surely, 2^257697134 is an apocalyptic number.

257697134 is a deficient number, since it is larger than the sum of its proper divisors (129063394).

257697134 is a wasteful number, since it uses less digits than its factorization.

257697134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71610.

The product of its digits is 317520, while the sum is 44.

The square root of 257697134 is about 16052.9478289814. The cubic root of 257697134 is about 636.3604733015.

The spelling of 257697134 in words is "two hundred fifty-seven million, six hundred ninety-seven thousand, one hundred thirty-four".