679257 has 12 divisors (see below), whose sum is σ = 995904. Its totient is φ = 446040.

The previous prime is 679249. The next prime is 679277. The reversal of 679257 is 752976.

It is not a de Polignac number, because 679257 - 2³ = 679249 is a prime.

It is a super-2 number, since 2×679257² = 922780144098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108 + ... + 1170.

It is an arithmetic number, because the mean of its divisors is an integer number (82992).

2⁶⁷⁹²⁵⁷ is an apocalyptic number.

It is an amenable number.

679257 is a deficient number, since it is larger than the sum of its proper divisors (316647).

679257 is a wasteful number, since it uses less digits than its factorization.

679257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1137 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 679257 is about 824.1704920707. The cubic root of 679257 is about 87.9045538843.

The spelling of 679257 in words is "six hundred seventy-nine thousand, two hundred fifty-seven".