66273264 has 30 divisors (see below), whose sum is σ = 185473496. Its totient is φ = 22091040.

The previous prime is 66273247. The next prime is 66273283. The reversal of 66273264 is 46237266.

It is a happy number.

66273264 is a `hidden beast` number, since 6 + 627 + 3 + 26 + 4 = 666.

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

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229972 + ... + 230259.

Almost surely, 2^66273264 is an apocalyptic number.

It is an amenable number.

66273264 is an abundant number, since it is smaller than the sum of its proper divisors (119200232).

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

66273264 is a wasteful number, since it uses less digits than its factorization.

66273264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460245 (or 460236 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 66273264 is about 8140.8392687732. The cubic root of 66273264 is about 404.6809741865.

The spelling of 66273264 in words is "sixty-six million, two hundred seventy-three thousand, two hundred sixty-four".