66133652 has 36 divisors (see below), whose sum is σ = 128233980. Its totient is φ = 29666304.

The previous prime is 66133649. The next prime is 66133663. The reversal of 66133652 is 25633166.

It can be written as a sum of positive squares in 6 ways, for example, as 264196 + 65869456 = 514^2 + 8116^2 .

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, 70724 + ... + 71652.

It is an arithmetic number, because the mean of its divisors is an integer number (3562055).

Almost surely, 2^66133652 is an apocalyptic number.

It is an amenable number.

66133652 is a deficient number, since it is larger than the sum of its proper divisors (62100328).

66133652 is a wasteful number, since it uses less digits than its factorization.

66133652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 981 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 66133652 is about 8132.2599564943. The cubic root of 66133652 is about 404.3966059180.

The spelling of 66133652 in words is "sixty-six million, one hundred thirty-three thousand, six hundred fifty-two".