257607652 has 12 divisors (see below), whose sum is σ = 455879340. Its totient is φ = 127356416.

The previous prime is 257607631. The next prime is 257607673. The reversal of 257607652 is 256706752.

It is an interprime number because it is at equal distance from previous prime (257607631) and next prime (257607673).

It can be written as a sum of positive squares in 2 ways, for example, as 13498276 + 244109376 = 3674^2 + 15624^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361453 + ... + 362164.

It is an arithmetic number, because the mean of its divisors is an integer number (37989945).

Almost surely, 2^257607652 is an apocalyptic number.

It is an amenable number.

257607652 is a deficient number, since it is larger than the sum of its proper divisors (198271688).

257607652 is a wasteful number, since it uses less digits than its factorization.

257607652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723710 (or 723708 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 257607652 is about 16050.1604976399. The cubic root of 257607652 is about 636.2868087906.

The spelling of 257607652 in words is "two hundred fifty-seven million, six hundred seven thousand, six hundred fifty-two".