680503836 has 24 divisors (see below), whose sum is σ = 1588271104. Its totient is φ = 226773360.

The previous prime is 680503819. The next prime is 680503841. The reversal of 680503836 is 638305086.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 680503794 and 680503803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70731 + ... + 79773.

Almost surely, 2^680503836 is an apocalyptic number.

It is an amenable number.

680503836 is an abundant number, since it is smaller than the sum of its proper divisors (907767268).

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

680503836 is a wasteful number, since it uses less digits than its factorization.

680503836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15321 (or 15319 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 680503836 is about 26086.4684463037. The cubic root of 680503836 is about 879.5830652329.

The spelling of 680503836 in words is "six hundred eighty million, five hundred three thousand, eight hundred thirty-six".