680856632 has 16 divisors (see below), whose sum is σ = 1277276640. Its totient is φ = 340249536.

The previous prime is 680856629. The next prime is 680856641. The reversal of 680856632 is 236658086.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5408 + ... + 37295.

It is an arithmetic number, because the mean of its divisors is an integer number (79829790).

Almost surely, 2^680856632 is an apocalyptic number.

It is an amenable number.

680856632 is a deficient number, since it is larger than the sum of its proper divisors (596420008).

680856632 is a wasteful number, since it uses less digits than its factorization.

680856632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44702 (or 44698 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 680856632 is about 26093.2296199608. The cubic root of 680856632 is about 879.7350407548.

The spelling of 680856632 in words is "six hundred eighty million, eight hundred fifty-six thousand, six hundred thirty-two".