680313136 has 20 divisors (see below), whose sum is σ = 1375416432. Its totient is φ = 325366976.

The previous prime is 680313133. The next prime is 680313143. The reversal of 680313136 is 631313086.

It is a junction number, because it is equal to n+sod(n) for n = 680313098 and 680313107.

It is not an unprimeable number, because it can be changed into a prime (680313133) 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, 923971 + ... + 924706.

Almost surely, 2^680313136 is an apocalyptic number.

It is an amenable number.

680313136 is an abundant number, since it is smaller than the sum of its proper divisors (695103296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680313136 is a wasteful number, since it uses less digits than its factorization.

680313136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848708 (or 1848702 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 680313136 is about 26082.8130384742. The cubic root of 680313136 is about 879.5008946643.

Subtracting from 680313136 its reverse (631313086), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 680313136 in words is "six hundred eighty million, three hundred thirteen thousand, one hundred thirty-six".