680647724 has 24 divisors (see below), whose sum is σ = 1224672288. Its totient is φ = 330802560.

The previous prime is 680647663. The next prime is 680647729. The reversal of 680647724 is 427746086.

It is not an unprimeable number, because it can be changed into a prime (680647729) 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 7 ways as a sum of consecutive naturals, for example, 37937 + ... + 52919.

It is an arithmetic number, because the mean of its divisors is an integer number (51028012).

Almost surely, 2^680647724 is an apocalyptic number.

It is an amenable number.

680647724 is a deficient number, since it is larger than the sum of its proper divisors (544024564).

680647724 is a wasteful number, since it uses less digits than its factorization.

680647724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15305 (or 15303 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 680647724 is about 26089.2262054665. The cubic root of 680647724 is about 879.6450548560.

The spelling of 680647724 in words is "six hundred eighty million, six hundred forty-seven thousand, seven hundred twenty-four".