66552164 has 24 divisors (see below), whose sum is σ = 137399808. Its totient is φ = 27601920.

The previous prime is 66552163. The next prime is 66552173. The reversal of 66552164 is 46125566.

It is not an unprimeable number, because it can be changed into a prime (66552163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37469 + ... + 39204.

It is an arithmetic number, because the mean of its divisors is an integer number (5724992).

Almost surely, 2^66552164 is an apocalyptic number.

It is an amenable number.

66552164 is an abundant number, since it is smaller than the sum of its proper divisors (70847644).

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

66552164 is a wasteful number, since it uses less digits than its factorization.

66552164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76715 (or 76713 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 66552164 is about 8157.9509682273. The cubic root of 66552164 is about 405.2478572239.

The spelling of 66552164 in words is "sixty-six million, five hundred fifty-two thousand, one hundred sixty-four".