686668046264 has 16 divisors (see below), whose sum is σ = 1287658075200. Its totient is φ = 343292559552.

The previous prime is 686668046263. The next prime is 686668046287. The reversal of 686668046264 is 462640866686.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 686668046197 and 686668046206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686668046263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5112509 + ... + 5245100.

It is an arithmetic number, because the mean of its divisors is an integer number (80478629700).

Almost surely, 2^686668046264 is an apocalyptic number.

It is an amenable number.

686668046264 is a deficient number, since it is larger than the sum of its proper divisors (600990028936).

686668046264 is a wasteful number, since it uses less digits than its factorization.

686668046264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10365902 (or 10365898 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 62.

The spelling of 686668046264 in words is "six hundred eighty-six billion, six hundred sixty-eight million, forty-six thousand, two hundred sixty-four".