686444894732 has 12 divisors (see below), whose sum is σ = 1208930022720. Its totient is φ = 341036316816.

The previous prime is 686444894699. The next prime is 686444894753. The reversal of 686444894732 is 237498444686.

It is a super-2 number, since 2×686444894732² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546531932 + ... + 546533187.

It is an arithmetic number, because the mean of its divisors is an integer number (100744168560).

Almost surely, 2^686444894732 is an apocalyptic number.

It is an amenable number.

686444894732 is a deficient number, since it is larger than the sum of its proper divisors (522485127988).

686444894732 is a wasteful number, since it uses less digits than its factorization.

686444894732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093065280 (or 1093065278 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 65.

The spelling of 686444894732 in words is "six hundred eighty-six billion, four hundred forty-four million, eight hundred ninety-four thousand, seven hundred thirty-two".