686164527387 has 12 divisors (see below), whose sum is σ = 992097293824. Its totient is φ = 456994977840.

The previous prime is 686164527371. The next prime is 686164527409. The reversal of 686164527387 is 783725461686.

686164527387 is a `hidden beast` number, since 6 + 8 + 616 + 4 + 5 + 2 + 7 + 3 + 8 + 7 = 666.

It is not a de Polignac number, because 686164527387 - 2⁴ = 686164527371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686164527317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37327003 + ... + 37345380.

Almost surely, 2^686164527387 is an apocalyptic number.

686164527387 is a deficient number, since it is larger than the sum of its proper divisors (305932766437).

686164527387 is a wasteful number, since it uses less digits than its factorization.

686164527387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74673410 (or 74673407 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 686164527387 in words is "six hundred eighty-six billion, one hundred sixty-four million, five hundred twenty-seven thousand, three hundred eighty-seven".