66679272 has 48 divisors (see below), whose sum is σ = 197009280. Its totient is φ = 20205600.

The previous prime is 66679267. The next prime is 66679289. The reversal of 66679272 is 27297666.

It is a super-2 number, since 2×66679272² = 8892250628899968, which contains 22 as substring.

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, 41304 + ... + 42887.

It is an arithmetic number, because the mean of its divisors is an integer number (4104360).

Almost surely, 2^66679272 is an apocalyptic number.

It is an amenable number.

66679272 is an abundant number, since it is smaller than the sum of its proper divisors (130330008).

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

66679272 is a wasteful number, since it uses less digits than its factorization.

66679272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84214 (or 84207 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 66679272 is about 8165.7376886599. The cubic root of 66679272 is about 405.5056874889.

The spelling of 66679272 in words is "sixty-six million, six hundred seventy-nine thousand, two hundred seventy-two".