686496099957 has 16 divisors (see below), whose sum is σ = 931417542720. Its totient is φ = 449687250432.

The previous prime is 686496099931. The next prime is 686496100007. The reversal of 686496099957 is 759990694686.

It is not a de Polignac number, because 686496099957 - 2⁶ = 686496099893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686496099557) 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, 8445498 + ... + 8526395.

It is an arithmetic number, because the mean of its divisors is an integer number (58213596420).

Almost surely, 2^686496099957 is an apocalyptic number.

It is an amenable number.

686496099957 is a deficient number, since it is larger than the sum of its proper divisors (244921442763).

686496099957 is a wasteful number, since it uses less digits than its factorization.

686496099957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16972132.

The product of its (nonzero) digits is 1587237120, while the sum is 78.

The spelling of 686496099957 in words is "six hundred eighty-six billion, four hundred ninety-six million, ninety-nine thousand, nine hundred fifty-seven".