20660652 has 36 divisors (see below), whose sum is σ = 53640496. Its totient is φ = 6700320.

The previous prime is 20660621. The next prime is 20660659. The reversal of 20660652 is 25606602.

20660652 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 0 + 652 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20660659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6424 + ... + 9087.

Almost surely, 2^20660652 is an apocalyptic number.

It is an amenable number.

20660652 is an abundant number, since it is smaller than the sum of its proper divisors (32979844).

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

20660652 is a wasteful number, since it uses less digits than its factorization.

20660652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15558 (or 15553 counting only the distinct ones).

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

The square root of 20660652 is about 4545.3989923878. The cubic root of 20660652 is about 274.3982522760.

It can be divided in two parts, 20660 and 652, that added together give a palindrome (21312).

The spelling of 20660652 in words is "twenty million, six hundred sixty thousand, six hundred fifty-two".