686417064884 has 12 divisors (see below), whose sum is σ = 1239979214208. Its totient is φ = 332137289400.

The previous prime is 686417064829. The next prime is 686417064901. The reversal of 686417064884 is 488460714686.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767810622 + ... + 2767810869.

It is an arithmetic number, because the mean of its divisors is an integer number (103331601184).

Almost surely, 2^686417064884 is an apocalyptic number.

It is an amenable number.

686417064884 is a deficient number, since it is larger than the sum of its proper divisors (553562149324).

686417064884 is a wasteful number, since it uses less digits than its factorization.

686417064884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535621526 (or 5535621524 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 62.

The spelling of 686417064884 in words is "six hundred eighty-six billion, four hundred seventeen million, sixty-four thousand, eight hundred eighty-four".