257164670 has 16 divisors (see below), whose sum is σ = 529024608. Its totient is φ = 88170720.

The previous prime is 257164651. The next prime is 257164697. The reversal of 257164670 is 76461752.

It is a super-2 number, since 2×257164670² = 132267334992417800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836821 + ... + 1836960.

It is an arithmetic number, because the mean of its divisors is an integer number (33064038).

Almost surely, 2^257164670 is an apocalyptic number.

257164670 is an abundant number, since it is smaller than the sum of its proper divisors (271859938).

257164670 is a wasteful number, since it uses less digits than its factorization.

257164670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673795.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 257164670 is about 16036.3546356396. The cubic root of 257164670 is about 635.9218800322.

The spelling of 257164670 in words is "two hundred fifty-seven million, one hundred sixty-four thousand, six hundred seventy".