686534852924 has 48 divisors (see below), whose sum is σ = 1214502170112. Its totient is φ = 339558606912.

The previous prime is 686534852903. The next prime is 686534852929. The reversal of 686534852924 is 429258435686.

686534852924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686534852924² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686534852929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158660849 + ... + 158665175.

It is an arithmetic number, because the mean of its divisors is an integer number (25302128544).

Almost surely, 2^686534852924 is an apocalyptic number.

It is an amenable number.

686534852924 is a deficient number, since it is larger than the sum of its proper divisors (527967317188).

686534852924 is a wasteful number, since it uses less digits than its factorization.

686534852924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642 (or 5640 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 62.

The spelling of 686534852924 in words is "six hundred eighty-six billion, five hundred thirty-four million, eight hundred fifty-two thousand, nine hundred twenty-four".