686122016 has 24 divisors (see below), whose sum is σ = 1409534784. Its totient is φ = 328144960.

The previous prime is 686122007. The next prime is 686122051. The reversal of 686122016 is 610221686.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465380 + ... + 466851.

It is an arithmetic number, because the mean of its divisors is an integer number (58730616).

Almost surely, 2^686122016 is an apocalyptic number.

It is an amenable number.

686122016 is an abundant number, since it is smaller than the sum of its proper divisors (723412768).

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

686122016 is a wasteful number, since it uses less digits than its factorization.

686122016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932264 (or 932256 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 686122016 is about 26193.9309001150. The cubic root of 686122016 is about 881.9970211214.

The spelling of 686122016 in words is "six hundred eighty-six million, one hundred twenty-two thousand, sixteen".