66020652 has 36 divisors (see below), whose sum is σ = 170770600. Its totient is φ = 21494592.

The previous prime is 66020641. The next prime is 66020671. The reversal of 66020652 is 25602066.

66020652 is a `hidden beast` number, since 6 + 6 + 0 + 2 + 0 + 652 = 666.

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

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, 19777 + ... + 22872.

Almost surely, 2^66020652 is an apocalyptic number.

It is an amenable number.

66020652 is an abundant number, since it is smaller than the sum of its proper divisors (104749948).

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

66020652 is a wasteful number, since it uses less digits than its factorization.

66020652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42702 (or 42697 counting only the distinct ones).

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

The square root of 66020652 is about 8125.3093479572. The cubic root of 66020652 is about 404.1661490245.

It can be divided in two parts, 660 and 20652, that added together give a palindrome (21312).

The spelling of 66020652 in words is "sixty-six million, twenty thousand, six hundred fifty-two".