680442140 has 24 divisors (see below), whose sum is σ = 1633061472. Its totient is φ = 233294400.

The previous prime is 680442131. The next prime is 680442179. The reversal of 680442140 is 41244086.

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, 2430011 + ... + 2430290.

It is an arithmetic number, because the mean of its divisors is an integer number (68044228).

Almost surely, 2^680442140 is an apocalyptic number.

It is an amenable number.

680442140 is an abundant number, since it is smaller than the sum of its proper divisors (952619332).

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

680442140 is a wasteful number, since it uses less digits than its factorization.

680442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860317 (or 4860315 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 680442140 is about 26085.2858907086. The cubic root of 680442140 is about 879.5564827735.

The spelling of 680442140 in words is "six hundred eighty million, four hundred forty-two thousand, one hundred forty".