20680662 has 16 divisors (see below), whose sum is σ = 41425920. Its totient is φ = 6882792.

The previous prime is 20680651. The next prime is 20680697. The reversal of 20680662 is 26608602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139 + ... + 6777.

It is an arithmetic number, because the mean of its divisors is an integer number (2589120).

Almost surely, 2^20680662 is an apocalyptic number.

20680662 is an abundant number, since it is smaller than the sum of its proper divisors (20745258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20680662 is a wasteful number, since it uses less digits than its factorization.

20680662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20680662 is about 4547.5995865951. The cubic root of 20680662 is about 274.4868092971.

The spelling of 20680662 in words is "twenty million, six hundred eighty thousand, six hundred sixty-two".