20654568 has 64 divisors (see below), whose sum is σ = 62596800. Its totient is φ = 6258240.

The previous prime is 20654563. The next prime is 20654591. The reversal of 20654568 is 86545602.

It is a super-2 number, since 2×20654568² = 853222358533248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20654561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971 + ... + 6722.

It is an arithmetic number, because the mean of its divisors is an integer number (978075).

Almost surely, 2^20654568 is an apocalyptic number.

It is an amenable number.

20654568 is an abundant number, since it is smaller than the sum of its proper divisors (41942232).

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

20654568 is a wasteful number, since it uses less digits than its factorization.

20654568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8719 (or 8709 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 20654568 is about 4544.7296949324. The cubic root of 20654568 is about 274.3713153581.

The spelling of 20654568 in words is "twenty million, six hundred fifty-four thousand, five hundred sixty-eight".