66240264 has 32 divisors (see below), whose sum is σ = 165856320. Its totient is φ = 22046016.

The previous prime is 66240257. The next prime is 66240277. The reversal of 66240264 is 46204266.

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, 17397 + ... + 20859.

It is an arithmetic number, because the mean of its divisors is an integer number (5183010).

Almost surely, 2^66240264 is an apocalyptic number.

It is an amenable number.

66240264 is an abundant number, since it is smaller than the sum of its proper divisors (99616056).

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

66240264 is a wasteful number, since it uses less digits than its factorization.

66240264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269 (or 4265 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 66240264 is about 8138.8121983493. The cubic root of 66240264 is about 404.6137943088.

The spelling of 66240264 in words is "sixty-six million, two hundred forty thousand, two hundred sixty-four".