680934156 has 48 divisors (see below), whose sum is σ = 1818727680. Its totient is φ = 194241600.

The previous prime is 680934151. The next prime is 680934187. The reversal of 680934156 is 651439086.

680934156 is a nontrivial binomial coefficient, being equal to C(36904, 2).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (680934151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49206 + ... + 61506.

It is an arithmetic number, because the mean of its divisors is an integer number (37890160).

Almost surely, 2^680934156 is an apocalyptic number.

680934156 is the 36903-rd triangular number and also the 18452-nd hexagonal number.

It is an amenable number.

680934156 is an abundant number, since it is smaller than the sum of its proper divisors (1137793524).

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

680934156 is a wasteful number, since it uses less digits than its factorization.

680934156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12974 (or 12972 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 680934156 is about 26094.7150971226. The cubic root of 680934156 is about 879.7684290815.

The spelling of 680934156 in words is "six hundred eighty million, nine hundred thirty-four thousand, one hundred fifty-six".