680682539 has 8 divisors (see below), whose sum is σ = 710554272. Its totient is φ = 650833920.

The previous prime is 680682523. The next prime is 680682559. The reversal of 680682539 is 935286086.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680682539 - 2⁴ = 680682523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680682493 and 680682502.

It is not an unprimeable number, because it can be changed into a prime (680682559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84779 + ... + 92459.

It is an arithmetic number, because the mean of its divisors is an integer number (88819284).

Almost surely, 2^680682539 is an apocalyptic number.

680682539 is a deficient number, since it is larger than the sum of its proper divisors (29871733).

680682539 is a wasteful number, since it uses less digits than its factorization.

680682539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11557.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 680682539 is about 26089.8934263826. The cubic root of 680682539 is about 879.6600524920.

It can be divided in two parts, 68068 and 2539, that added together give a palindrome (70607).

The spelling of 680682539 in words is "six hundred eighty million, six hundred eighty-two thousand, five hundred thirty-nine".