686485616 has 20 divisors (see below), whose sum is σ = 1332625272. Its totient is φ = 342582336.

The previous prime is 686485601. The next prime is 686485633. The reversal of 686485616 is 616584686.

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, 32651 + ... + 49386.

Almost surely, 2^686485616 is an apocalyptic number.

It is an amenable number.

686485616 is a deficient number, since it is larger than the sum of its proper divisors (646139656).

686485616 is a wasteful number, since it uses less digits than its factorization.

686485616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82568 (or 82562 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 686485616 is about 26200.8705198892. The cubic root of 686485616 is about 882.1527939417.

The spelling of 686485616 in words is "six hundred eighty-six million, four hundred eighty-five thousand, six hundred sixteen".