686725113 has 32 divisors (see below), whose sum is σ = 1019289600. Its totient is φ = 409449600.

The previous prime is 686725097. The next prime is 686725121. The reversal of 686725113 is 311527686.

It is not a de Polignac number, because 686725113 - 2⁴ = 686725097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (686725213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67708 + ... + 77186.

It is an arithmetic number, because the mean of its divisors is an integer number (31852800).

Almost surely, 2^686725113 is an apocalyptic number.

It is an amenable number.

686725113 is a deficient number, since it is larger than the sum of its proper divisors (332564487).

686725113 is a wasteful number, since it uses less digits than its factorization.

686725113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9573.

The product of its digits is 60480, while the sum is 39.

The square root of 686725113 is about 26205.4405229143. The cubic root of 686725113 is about 882.2553687461.

The spelling of 686725113 in words is "six hundred eighty-six million, seven hundred twenty-five thousand, one hundred thirteen".