2685643612 has 12 divisors (see below), whose sum is σ = 4976339760. Its totient is φ = 1263832256.

The previous prime is 2685643589. The next prime is 2685643627. The reversal of 2685643612 is 2163465862.

It is a super-2 number, since 2×2685643612² = 14425363221352813088, 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 3 ways as a sum of consecutive naturals, for example, 19747312 + ... + 19747447.

It is an arithmetic number, because the mean of its divisors is an integer number (414694980).

Almost surely, 2^2685643612 is an apocalyptic number.

It is an amenable number.

2685643612 is a deficient number, since it is larger than the sum of its proper divisors (2290696148).

2685643612 is a wasteful number, since it uses less digits than its factorization.

2685643612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39494780 (or 39494778 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 2685643612 is about 51823.1956945922. The cubic root of 2685643612 is about 1390.0042461441.

The spelling of 2685643612 in words is "two billion, six hundred eighty-five million, six hundred forty-three thousand, six hundred twelve".