20066568 has 16 divisors (see below), whose sum is σ = 50166480. Its totient is φ = 6688848.

The previous prime is 20066561. The next prime is 20066569. The reversal of 20066568 is 86566002.

It is not an unprimeable number, because it can be changed into a prime (20066561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418030 + ... + 418077.

It is an arithmetic number, because the mean of its divisors is an integer number (3135405).

Almost surely, 2^20066568 is an apocalyptic number.

It is an amenable number.

20066568 is an abundant number, since it is smaller than the sum of its proper divisors (30099912).

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

20066568 is a wasteful number, since it uses less digits than its factorization.

20066568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836116 (or 836112 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 20066568 is about 4479.5723010127. The cubic root of 20066568 is about 271.7425837404.

The spelling of 20066568 in words is "twenty million, sixty-six thousand, five hundred sixty-eight".