845213685 has 16 divisors (see below), whose sum is σ = 1355064000. Its totient is φ = 449873280.

The previous prime is 845213641. The next prime is 845213693. The reversal of 845213685 is 586312548.

It is not a de Polignac number, because 845213685 - 2⁷ = 845213557 is a prime.

It is a super-2 number, since 2×845213685² = 1428772346622558450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48976 + ... + 63945.

It is an arithmetic number, because the mean of its divisors is an integer number (84691500).

Almost surely, 2^845213685 is an apocalyptic number.

It is an amenable number.

845213685 is a deficient number, since it is larger than the sum of its proper divisors (509850315).

845213685 is a wasteful number, since it uses less digits than its factorization.

845213685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113428.

The product of its digits is 230400, while the sum is 42.

The square root of 845213685 is about 29072.5589688971. The cubic root of 845213685 is about 945.4868799276.

The spelling of 845213685 in words is "eight hundred forty-five million, two hundred thirteen thousand, six hundred eighty-five".