257671064 has 32 divisors (see below), whose sum is σ = 555876000. Its totient is φ = 109685760.

The previous prime is 257671031. The next prime is 257671097. The reversal of 257671064 is 460176752.

It is an interprime number because it is at equal distance from previous prime (257671031) and next prime (257671097).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7097 + ... + 23784.

It is an arithmetic number, because the mean of its divisors is an integer number (17371125).

Almost surely, 2^257671064 is an apocalyptic number.

It is an amenable number.

257671064 is an abundant number, since it is smaller than the sum of its proper divisors (298204936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257671064 is a wasteful number, since it uses less digits than its factorization.

257671064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31043 (or 31039 counting only the distinct ones).

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

The square root of 257671064 is about 16052.1358080475. The cubic root of 257671064 is about 636.3390133849.

The spelling of 257671064 in words is "two hundred fifty-seven million, six hundred seventy-one thousand, sixty-four".