680627057 has 6 divisors (see below), whose sum is σ = 748127394. Its totient is φ = 618751760.

The previous prime is 680627033. The next prime is 680627089. The reversal of 680627057 is 750726086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 390299536 + 290327521 = 19756^2 + 17039^2 .

It is not a de Polignac number, because 680627057 - 2⁶ = 680626993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680626057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2812388 + ... + 2812629.

It is an arithmetic number, because the mean of its divisors is an integer number (124687899).

Almost surely, 2^680627057 is an apocalyptic number.

It is an amenable number.

680627057 is a deficient number, since it is larger than the sum of its proper divisors (67500337).

680627057 is a wasteful number, since it uses less digits than its factorization.

680627057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625039 (or 5625028 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 680627057 is about 26088.8301194208. The cubic root of 680627057 is about 879.6361516659.

The spelling of 680627057 in words is "six hundred eighty million, six hundred twenty-seven thousand, fifty-seven".