680810516 has 12 divisors (see below), whose sum is σ = 1191626688. Its totient is φ = 340345752.

The previous prime is 680810513. The next prime is 680810519. The reversal of 680810516 is 615018086.

It is an interprime number because it is at equal distance from previous prime (680810513) and next prime (680810519).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680810513) 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, 19895 + ... + 41921.

It is an arithmetic number, because the mean of its divisors is an integer number (99302224).

Almost surely, 2^680810516 is an apocalyptic number.

It is an amenable number.

680810516 is a deficient number, since it is larger than the sum of its proper divisors (510816172).

680810516 is a wasteful number, since it uses less digits than its factorization.

680810516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29758 (or 29756 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 680810516 is about 26092.3459274938. The cubic root of 680810516 is about 879.7151781410.

The spelling of 680810516 in words is "six hundred eighty million, eight hundred ten thousand, five hundred sixteen".