66060172 has 6 divisors (see below), whose sum is σ = 115605308. Its totient is φ = 33030084.

The previous prime is 66060157. The next prime is 66060187. The reversal of 66060172 is 27106066.

It is an interprime number because it is at equal distance from previous prime (66060157) and next prime (66060187).

It is a self number, because there is not a number n which added to its sum of digits gives 66060172.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8257518 + ... + 8257525.

Almost surely, 2^66060172 is an apocalyptic number.

It is an amenable number.

66060172 is a deficient number, since it is larger than the sum of its proper divisors (49545136).

66060172 is a wasteful number, since it uses less digits than its factorization.

66060172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16515047 (or 16515045 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66060172 is about 8127.7408915393. The cubic root of 66060172 is about 404.2467776344.

The spelling of 66060172 in words is "sixty-six million, sixty thousand, one hundred seventy-two".