66252272 has 10 divisors (see below), whose sum is σ = 128363808. Its totient is φ = 33126128.

The previous prime is 66252233. The next prime is 66252289. The reversal of 66252272 is 27225266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070368 + ... + 2070399.

Almost surely, 2^66252272 is an apocalyptic number.

It is an amenable number.

66252272 is a deficient number, since it is larger than the sum of its proper divisors (62111536).

66252272 is a wasteful number, since it uses less digits than its factorization.

66252272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140775 (or 4140769 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 66252272 is about 8139.5498647038. The cubic root of 66252272 is about 404.6382422230.

The spelling of 66252272 in words is "sixty-six million, two hundred fifty-two thousand, two hundred seventy-two".