680057 has 4 divisors (see below), whose sum is σ = 777216. Its totient is φ = 582900.

The previous prime is 680039. The next prime is 680059. The reversal of 680057 is 750086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750086 = 2 ⋅375043.

It is a cyclic number.

It is not a de Polignac number, because 680057 - 2⁶ = 679993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48569 + ... + 48582.

It is an arithmetic number, because the mean of its divisors is an integer number (194304).

2⁶⁸⁰⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

680057 is a deficient number, since it is larger than the sum of its proper divisors (97159).

680057 is an equidigital number, since it uses as much as digits as its factorization.

680057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97158.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 680057 is about 824.6556857259. The cubic root of 680057 is about 87.9390504264.

The spelling of 680057 in words is "six hundred eighty thousand, fifty-seven".