66665304 has 48 divisors (see below), whose sum is σ = 181022400. Its totient is φ = 22163904.

The previous prime is 66665273. The next prime is 66665311. The reversal of 66665304 is 40356666.

It is a super-3 number, since 3×66665304³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 33522 + ... + 35454.

It is an arithmetic number, because the mean of its divisors is an integer number (3771300).

Almost surely, 2^66665304 is an apocalyptic number.

It is an amenable number.

66665304 is an abundant number, since it is smaller than the sum of its proper divisors (114357096).

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

66665304 is a wasteful number, since it uses less digits than its factorization.

66665304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 66665304 is about 8164.8823629003. The cubic root of 66665304 is about 405.4773703481.

The spelling of 66665304 in words is "sixty-six million, six hundred sixty-five thousand, three hundred four".