680557523 has 16 divisors (see below), whose sum is σ = 725709600. Its totient is φ = 636387840.

The previous prime is 680557439. The next prime is 680557531. The reversal of 680557523 is 325755086.

680557523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 680557523 - 2¹² = 680553427 is a prime.

It is a super-2 number, since 2×680557523² = 926317084223791058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680551523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772043 + ... + 772923.

It is an arithmetic number, because the mean of its divisors is an integer number (45356850).

Almost surely, 2^680557523 is an apocalyptic number.

680557523 is a deficient number, since it is larger than the sum of its proper divisors (45152077).

680557523 is a wasteful number, since it uses less digits than its factorization.

680557523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 680557523 is about 26087.4974460947. The cubic root of 680557523 is about 879.6061956116.

The spelling of 680557523 in words is "six hundred eighty million, five hundred fifty-seven thousand, five hundred twenty-three".