20680612 has 24 divisors (see below), whose sum is σ = 36945216. Its totient is φ = 10127328.

The previous prime is 20680603. The next prime is 20680613. The reversal of 20680612 is 21608602.

It is not an unprimeable number, because it can be changed into a prime (20680613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55258 + ... + 55630.

It is an arithmetic number, because the mean of its divisors is an integer number (1539384).

Almost surely, 2^20680612 is an apocalyptic number.

It is an amenable number.

20680612 is a deficient number, since it is larger than the sum of its proper divisors (16264604).

20680612 is a wasteful number, since it uses less digits than its factorization.

20680612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20680612 is about 4547.5940891861. The cubic root of 20680612 is about 274.4865880864.

The spelling of 20680612 in words is "twenty million, six hundred eighty thousand, six hundred twelve".