66204252 has 36 divisors (see below), whose sum is σ = 169238160. Its totient is φ = 21819072.

The previous prime is 66204221. The next prime is 66204263. The reversal of 66204252 is 25240266.

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

It is a congruent number.

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, 7128 + ... + 13535.

It is an arithmetic number, because the mean of its divisors is an integer number (4701060).

Almost surely, 2^66204252 is an apocalyptic number.

It is an amenable number.

66204252 is an abundant number, since it is smaller than the sum of its proper divisors (103033908).

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

66204252 is a wasteful number, since it uses less digits than its factorization.

66204252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20762 (or 20757 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 66204252 is about 8136.5995354325. The cubic root of 66204252 is about 404.5404572757.

The spelling of 66204252 in words is "sixty-six million, two hundred four thousand, two hundred fifty-two".