20059566 has 8 divisors (see below), whose sum is σ = 40119144. Its totient is φ = 6686520.

The previous prime is 20059549. The next prime is 20059583. The reversal of 20059566 is 66595002.

It is an interprime number because it is at equal distance from previous prime (20059549) and next prime (20059583).

It is a sphenic number, since it is the product of 3 distinct primes.

20059566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671625 + ... + 1671636.

It is an arithmetic number, because the mean of its divisors is an integer number (5014893).

Almost surely, 2^20059566 is an apocalyptic number.

20059566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20059566 is a wasteful number, since it uses less digits than its factorization.

20059566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343266.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 20059566 is about 4478.7906849952. The cubic root of 20059566 is about 271.7109729051.

It can be divided in two parts, 200595 and 66, that added together give a triangular number (200661 = T₆₃₃).

The spelling of 20059566 in words is "twenty million, fifty-nine thousand, five hundred sixty-six".