686125320 has 64 divisors (see below), whose sum is σ = 2078792640. Its totient is φ = 181152000.

The previous prime is 686125309. The next prime is 686125331. The reversal of 686125320 is 23521686.

It is an interprime number because it is at equal distance from previous prime (686125309) and next prime (686125331).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16186 + ... + 40425.

It is an arithmetic number, because the mean of its divisors is an integer number (32481135).

Almost surely, 2^686125320 is an apocalyptic number.

686125320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

686125320 is an abundant number, since it is smaller than the sum of its proper divisors (1392667320).

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

686125320 is a wasteful number, since it uses less digits than its factorization.

686125320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56726 (or 56722 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 686125320 is about 26193.9939680836. The cubic root of 686125320 is about 881.9984368625.

The spelling of 686125320 in words is "six hundred eighty-six million, one hundred twenty-five thousand, three hundred twenty".