680571872 has 12 divisors (see below), whose sum is σ = 1339875936. Its totient is φ = 340285920.

The previous prime is 680571869. The next prime is 680571877. The reversal of 680571872 is 278175086.

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 not an unprimeable number, because it can be changed into a prime (680571877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10633904 + ... + 10633967.

It is an arithmetic number, because the mean of its divisors is an integer number (111656328).

Almost surely, 2^680571872 is an apocalyptic number.

It is an amenable number.

680571872 is a deficient number, since it is larger than the sum of its proper divisors (659304064).

680571872 is a wasteful number, since it uses less digits than its factorization.

680571872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21267881 (or 21267873 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 680571872 is about 26087.7724614425. The cubic root of 680571872 is about 879.6123774944.

The spelling of 680571872 in words is "six hundred eighty million, five hundred seventy-one thousand, eight hundred seventy-two".