66227992 has 16 divisors (see below), whose sum is σ = 125085960. Its totient is φ = 32871744.

The previous prime is 66227989. The next prime is 66228037. The reversal of 66227992 is 29972266.

It is a super-2 number, since 2×66227992² = 8772293848704128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29118 + ... + 31309.

Almost surely, 2^66227992 is an apocalyptic number.

It is an amenable number.

66227992 is a deficient number, since it is larger than the sum of its proper divisors (58857968).

66227992 is a wasteful number, since it uses less digits than its factorization.

66227992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60570 (or 60566 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 66227992 is about 8138.0582450607. The cubic root of 66227992 is about 404.5888058458.

The spelling of 66227992 in words is "sixty-six million, two hundred twenty-seven thousand, nine hundred ninety-two".