686954892 has 48 divisors (see below), whose sum is σ = 1801255680. Its totient is φ = 202179648.

The previous prime is 686954857. The next prime is 686954903. The reversal of 686954892 is 298459686.

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 15 ways as a sum of consecutive naturals, for example, 92142 + ... + 99317.

It is an arithmetic number, because the mean of its divisors is an integer number (37526160).

Almost surely, 2^686954892 is an apocalyptic number.

It is an amenable number.

686954892 is an abundant number, since it is smaller than the sum of its proper divisors (1114300788).

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

686954892 is a wasteful number, since it uses less digits than its factorization.

686954892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191502 (or 191500 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The square root of 686954892 is about 26209.8243412656. The cubic root of 686954892 is about 882.3537589880.

The spelling of 686954892 in words is "six hundred eighty-six million, nine hundred fifty-four thousand, eight hundred ninety-two".