66655652 has 24 divisors (see below), whose sum is σ = 135192960. Its totient is φ = 28163520.

The previous prime is 66655613. The next prime is 66655661. The reversal of 66655652 is 25655666.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14777 + ... + 18752.

It is an arithmetic number, because the mean of its divisors is an integer number (5633040).

Almost surely, 2^66655652 is an apocalyptic number.

It is an amenable number.

66655652 is an abundant number, since it is smaller than the sum of its proper divisors (68537308).

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

66655652 is a wasteful number, since it uses less digits than its factorization.

66655652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33611 (or 33609 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The square root of 66655652 is about 8164.2912735889. The cubic root of 66655652 is about 405.4578006657.

The spelling of 66655652 in words is "sixty-six million, six hundred fifty-five thousand, six hundred fifty-two".