66665032 has 16 divisors (see below), whose sum is σ = 142853760. Its totient is φ = 28570704.

The previous prime is 66665023. The next prime is 66665033. The reversal of 66665032 is 23056666.

It is a super-2 number, since 2×66665032² = 8888452983122048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66665033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595168 + ... + 595279.

It is an arithmetic number, because the mean of its divisors is an integer number (8928360).

Almost surely, 2^66665032 is an apocalyptic number.

It is an amenable number.

66665032 is an abundant number, since it is smaller than the sum of its proper divisors (76188728).

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

66665032 is a wasteful number, since it uses less digits than its factorization.

66665032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190460 (or 1190456 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 66665032 is about 8164.8657061828. The cubic root of 66665032 is about 405.4768188869.

The spelling of 66665032 in words is "sixty-six million, six hundred sixty-five thousand, thirty-two".