680827057 has 4 divisors (see below), whose sum is σ = 716660080. Its totient is φ = 644994036.

The previous prime is 680827031. The next prime is 680827073. The reversal of 680827057 is 750728086.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 680827057 - 2²³ = 672438449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680827097) 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, 17916483 + ... + 17916520.

It is an arithmetic number, because the mean of its divisors is an integer number (179165020).

Almost surely, 2^680827057 is an apocalyptic number.

It is an amenable number.

680827057 is a deficient number, since it is larger than the sum of its proper divisors (35833023).

680827057 is a wasteful number, since it uses less digits than its factorization.

680827057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35833022.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 680827057 is about 26092.6628959177. The cubic root of 680827057 is about 879.7223026152.

The spelling of 680827057 in words is "six hundred eighty million, eight hundred twenty-seven thousand, fifty-seven".