685726915492 has 12 divisors (see below), whose sum is σ = 1200027936240. Its totient is φ = 342861790856.

The previous prime is 685726915459. The next prime is 685726915547. The reversal of 685726915492 is 294519627586.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246203 + ... + 1710109.

It is an arithmetic number, because the mean of its divisors is an integer number (100002328020).

Almost surely, 2^685726915492 is an apocalyptic number.

It is an amenable number.

685726915492 is a deficient number, since it is larger than the sum of its proper divisors (514301020748).

685726915492 is a wasteful number, since it uses less digits than its factorization.

685726915492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833450 (or 833448 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 64.

The spelling of 685726915492 in words is "six hundred eighty-five billion, seven hundred twenty-six million, nine hundred fifteen thousand, four hundred ninety-two".