257231606 has 8 divisors (see below), whose sum is σ = 386491224. Its totient is φ = 128401200.

The previous prime is 257231599. The next prime is 257231647. The reversal of 257231606 is 606132752.

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, 105800 + ... + 108203.

It is an arithmetic number, because the mean of its divisors is an integer number (48311403).

Almost surely, 2^257231606 is an apocalyptic number.

257231606 is a deficient number, since it is larger than the sum of its proper divisors (129259618).

257231606 is a wasteful number, since it uses less digits than its factorization.

257231606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214606.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 257231606 is about 16038.4415078274. The cubic root of 257231606 is about 635.9770488006.

The spelling of 257231606 in words is "two hundred fifty-seven million, two hundred thirty-one thousand, six hundred six".