66065264 has 20 divisors (see below), whose sum is σ = 135531504. Its totient is φ = 31089408.

The previous prime is 66065249. The next prime is 66065267. The reversal of 66065264 is 46256066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66065267) 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, 121172 + ... + 121715.

Almost surely, 2^66065264 is an apocalyptic number.

It is an amenable number.

66065264 is an abundant number, since it is smaller than the sum of its proper divisors (69466240).

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

66065264 is a wasteful number, since it uses less digits than its factorization.

66065264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242912 (or 242906 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 66065264 is about 8128.0541336780. The cubic root of 66065264 is about 404.2571639819.

The spelling of 66065264 in words is "sixty-six million, sixty-five thousand, two hundred sixty-four".