680876136 has 24 divisors (see below), whose sum is σ = 1844039730. Its totient is φ = 226958688.

The previous prime is 680876117. The next prime is 680876137. The reversal of 680876136 is 631678086.

It can be written as a sum of positive squares in only one way, i.e., 651780900 + 29095236 = 25530^2 + 5394^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 680876091 and 680876100.

It is not an unprimeable number, because it can be changed into a prime (680876137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4728235 + ... + 4728378.

Almost surely, 2^680876136 is an apocalyptic number.

It is an amenable number.

680876136 is an abundant number, since it is smaller than the sum of its proper divisors (1163163594).

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

680876136 is a wasteful number, since it uses less digits than its factorization.

680876136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456625 (or 9456618 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 680876136 is about 26093.6033540789. The cubic root of 680876136 is about 879.7434410492.

It can be divided in two parts, 6808 and 76136, that added together give a square (82944 = 288²).

The spelling of 680876136 in words is "six hundred eighty million, eight hundred seventy-six thousand, one hundred thirty-six".