680999713 has 4 divisors (see below), whose sum is σ = 681533440. Its totient is φ = 680465988.

The previous prime is 680999687. The next prime is 680999717. The reversal of 680999713 is 317999086.

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 a de Polignac number, because none of the positive numbers 2^k-680999713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680999717) 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, 264945 + ... + 267502.

It is an arithmetic number, because the mean of its divisors is an integer number (170383360).

Almost surely, 2^680999713 is an apocalyptic number.

It is an amenable number.

680999713 is a deficient number, since it is larger than the sum of its proper divisors (533727).

680999713 is a wasteful number, since it uses less digits than its factorization.

680999713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533726.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 680999713 is about 26095.9712024672. The cubic root of 680999713 is about 879.7966614383.

The spelling of 680999713 in words is "six hundred eighty million, nine hundred ninety-nine thousand, seven hundred thirteen".