680442631 has 8 divisors (see below), whose sum is σ = 767898000. Its totient is φ = 597253440.

The previous prime is 680442599. The next prime is 680442661. The reversal of 680442631 is 136244086.

680442631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680442631 - 2⁵ = 680442599 is a prime.

It is a super-2 number, since 2×680442631² = 926004348164404322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680442661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066206 + ... + 1066843.

It is an arithmetic number, because the mean of its divisors is an integer number (95987250).

Almost surely, 2^680442631 is an apocalyptic number.

680442631 is a deficient number, since it is larger than the sum of its proper divisors (87455369).

680442631 is a wasteful number, since it uses less digits than its factorization.

680442631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133089.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 680442631 is about 26085.2953021429. The cubic root of 680442631 is about 879.5566943331.

The spelling of 680442631 in words is "six hundred eighty million, four hundred forty-two thousand, six hundred thirty-one".