680442630 has 64 divisors (see below), whose sum is σ = 1964597760. Its totient is φ = 147343104.

The previous prime is 680442599. The next prime is 680442661. The reversal of 680442630 is 36244086.

It is an interprime number because it is at equal distance from previous prime (680442599) and next prime (680442661).

It is a junction number, because it is equal to n+sod(n) for n = 680442591 and 680442600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81279 + ... + 89258.

It is an arithmetic number, because the mean of its divisors is an integer number (30696840).

Almost surely, 2^680442630 is an apocalyptic number.

680442630 is an abundant number, since it is smaller than the sum of its proper divisors (1284155130).

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

680442630 is a wasteful number, since it uses less digits than its factorization.

680442630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170573.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 680442630 is about 26085.2952829750. The cubic root of 680442630 is about 879.5566939022.

The spelling of 680442630 in words is "six hundred eighty million, four hundred forty-two thousand, six hundred thirty".