257074 has 8 divisors (see below), whose sum is σ = 408348. Its totient is φ = 120960.

The previous prime is 257069. The next prime is 257077. The reversal of 257074 is 470752.

It can be written as a sum of positive squares in 2 ways, for example, as 257049 + 25 = 507^2 + 5^2 .

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

It is not an unprimeable number, because it can be changed into a prime (257077) by changing a digit.

257074 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3747 + ... + 3814.

2²⁵⁷⁰⁷⁴ is an apocalyptic number.

257074 is a deficient number, since it is larger than the sum of its proper divisors (151274).

257074 is a wasteful number, since it uses less digits than its factorization.

257074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 257074 is about 507.0246542329. The cubic root of 257074 is about 63.5847134391.

Subtracting from 257074 its sum of digits (25), we obtain a square (257049 = 507²).

The spelling of 257074 in words is "two hundred fifty-seven thousand, seventy-four".