686137447246 has 16 divisors (see below), whose sum is σ = 1066467633840. Its totient is φ = 330687604800.

The previous prime is 686137447201. The next prime is 686137447279. The reversal of 686137447246 is 642744731686.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9807036 + ... + 9876751.

It is an arithmetic number, because the mean of its divisors is an integer number (66654227115).

Almost surely, 2^686137447246 is an apocalyptic number.

686137447246 is a deficient number, since it is larger than the sum of its proper divisors (380330186594).

686137447246 is a wasteful number, since it uses less digits than its factorization.

686137447246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19684419.

The product of its digits is 32514048, while the sum is 58.

The spelling of 686137447246 in words is "six hundred eighty-six billion, one hundred thirty-seven million, four hundred forty-seven thousand, two hundred forty-six".