20663514 has 24 divisors (see below), whose sum is σ = 45313632. Its totient is φ = 6804360.

The previous prime is 20663509. The next prime is 20663543. The reversal of 20663514 is 41536602.

20663514 is a `hidden beast` number, since 20 + 6 + 635 + 1 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5422 + ... + 8409.

It is an arithmetic number, because the mean of its divisors is an integer number (1888068).

Almost surely, 2^20663514 is an apocalyptic number.

20663514 is an abundant number, since it is smaller than the sum of its proper divisors (24650118).

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

20663514 is a wasteful number, since it uses less digits than its factorization.

20663514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13922 (or 13919 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20663514 is about 4545.7138053335. The cubic root of 20663514 is about 274.4109219559.

The spelling of 20663514 in words is "twenty million, six hundred sixty-three thousand, five hundred fourteen".