685982474554 has 16 divisors (see below), whose sum is σ = 1166447933280. Its totient is φ = 299943753840.

The previous prime is 685982474549. The next prime is 685982474579. The reversal of 685982474554 is 455474289586.

It is a self number, because there is not a number n which added to its sum of digits gives 685982474554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694313752 + ... + 694314739.

It is an arithmetic number, because the mean of its divisors is an integer number (72902995830).

Almost surely, 2^685982474554 is an apocalyptic number.

685982474554 is a deficient number, since it is larger than the sum of its proper divisors (480465458726).

685982474554 is a wasteful number, since it uses less digits than its factorization.

685982474554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388628525.

The product of its digits is 387072000, while the sum is 67.

The spelling of 685982474554 in words is "six hundred eighty-five billion, nine hundred eighty-two million, four hundred seventy-four thousand, five hundred fifty-four".