257672327 has 4 divisors (see below), whose sum is σ = 281097096. Its totient is φ = 234247560.

The previous prime is 257672323. The next prime is 257672339. The reversal of 257672327 is 723276752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257672327 - 2² = 257672323 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 (257672321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11712368 + ... + 11712389.

It is an arithmetic number, because the mean of its divisors is an integer number (70274274).

Almost surely, 2^257672327 is an apocalyptic number.

257672327 is a deficient number, since it is larger than the sum of its proper divisors (23424769).

257672327 is a wasteful number, since it uses less digits than its factorization.

257672327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23424768.

The product of its digits is 246960, while the sum is 41.

The square root of 257672327 is about 16052.1751485585. The cubic root of 257672327 is about 636.3400530759.

The spelling of 257672327 in words is "two hundred fifty-seven million, six hundred seventy-two thousand, three hundred twenty-seven".