686627912 has 16 divisors (see below), whose sum is σ = 1287705600. Its totient is φ = 343239760.

The previous prime is 686627863. The next prime is 686627941. The reversal of 686627912 is 219726686.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 65789 + ... + 75507.

It is an arithmetic number, because the mean of its divisors is an integer number (80481600).

Almost surely, 2^686627912 is an apocalyptic number.

It is an amenable number.

686627912 is a deficient number, since it is larger than the sum of its proper divisors (601077688).

686627912 is a wasteful number, since it uses less digits than its factorization.

686627912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18556 (or 18552 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 686627912 is about 26203.5858614809. The cubic root of 686627912 is about 882.2137411482.

The spelling of 686627912 in words is "six hundred eighty-six million, six hundred twenty-seven thousand, nine hundred twelve".