686054976696 has 24 divisors (see below), whose sum is σ = 1858065562080. Its totient is φ = 228684992208.

The previous prime is 686054976671. The next prime is 686054976697. The reversal of 686054976696 is 696679450686.

It is a happy number.

686054976696 is a `hidden beast` number, since 6 + 8 + 6 + 0 + 549 + 76 + 6 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 9528541343 = 686054976696 / (6 + 8 + 6 + 0 + 5 + 4 + 9 + 7 + 6 + 6 + 9 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686054976697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4764270600 + ... + 4764270743.

It is an arithmetic number, because the mean of its divisors is an integer number (77419398420).

Almost surely, 2^686054976696 is an apocalyptic number.

It is an amenable number.

686054976696 is an abundant number, since it is smaller than the sum of its proper divisors (1172010585384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686054976696 is a wasteful number, since it uses less digits than its factorization.

686054976696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528541355 (or 9528541348 counting only the distinct ones).

The product of its (nonzero) digits is 705438720, while the sum is 72.

The spelling of 686054976696 in words is "six hundred eighty-six billion, fifty-four million, nine hundred seventy-six thousand, six hundred ninety-six".