20664714 has 16 divisors (see below), whose sum is σ = 47233728. Its totient is φ = 5904192.

The previous prime is 20664689. The next prime is 20664727. The reversal of 20664714 is 41746602.

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, 245967 + ... + 246050.

It is an arithmetic number, because the mean of its divisors is an integer number (2952108).

Almost surely, 2^20664714 is an apocalyptic number.

20664714 is an abundant number, since it is smaller than the sum of its proper divisors (26569014).

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

20664714 is a wasteful number, since it uses less digits than its factorization.

20664714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492029.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20664714 is about 4545.8457958888. The cubic root of 20664714 is about 274.4162338425.

The spelling of 20664714 in words is "twenty million, six hundred sixty-four thousand, seven hundred fourteen".