257607669 has 12 divisors (see below), whose sum is σ = 377541248. Its totient is φ = 156125640.

The previous prime is 257607631. The next prime is 257607673. The reversal of 257607669 is 966706752.

It is not a de Polignac number, because 257607669 - 2⁷ = 257607541 is a prime.

It is a super-2 number, since 2×257607669² = 132723422255227122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257607619) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 354469 + ... + 355194.

Almost surely, 2^257607669 is an apocalyptic number.

It is an amenable number.

257607669 is a deficient number, since it is larger than the sum of its proper divisors (119933579).

257607669 is a wasteful number, since it uses less digits than its factorization.

257607669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709688 (or 709677 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 257607669 is about 16050.1610272296. The cubic root of 257607669 is about 636.2868227872.

The spelling of 257607669 in words is "two hundred fifty-seven million, six hundred seven thousand, six hundred sixty-nine".