66018652 has 12 divisors (see below), whose sum is σ = 132037360. Its totient is φ = 28293696.

The previous prime is 66018647. The next prime is 66018709. The reversal of 66018652 is 25681066.

66018652 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178877 + ... + 1178932.

Almost surely, 2^66018652 is an apocalyptic number.

It is an amenable number.

66018652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66018652 is a wasteful number, since it uses less digits than its factorization.

66018652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357820 (or 2357818 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 66018652 is about 8125.1862747878. The cubic root of 66018652 is about 404.1620677740.

The spelling of 66018652 in words is "sixty-six million, eighteen thousand, six hundred fifty-two".