685872972683 has 4 divisors (see below), whose sum is σ = 685888917168. Its totient is φ = 685857028200.

The previous prime is 685872972527. The next prime is 685872972703. The reversal of 685872972683 is 386279278586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685872972683 - 2⁸ = 685872972427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685812972683) 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, 7907543 + ... + 7993808.

It is an arithmetic number, because the mean of its divisors is an integer number (171472229292).

Almost surely, 2^685872972683 is an apocalyptic number.

685872972683 is a deficient number, since it is larger than the sum of its proper divisors (15944485).

685872972683 is a wasteful number, since it uses less digits than its factorization.

685872972683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15944484.

The product of its digits is 487710720, while the sum is 71.

The spelling of 685872972683 in words is "six hundred eighty-five billion, eight hundred seventy-two million, nine hundred seventy-two thousand, six hundred eighty-three".