66030172 has 24 divisors (see below), whose sum is σ = 127480752. Its totient is φ = 29731200.

The previous prime is 66030119. The next prime is 66030229. The reversal of 66030172 is 27103066.

It is a super-2 number, since 2×66030172² = 8719967228699168, 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 7 ways as a sum of consecutive naturals, for example, 13354 + ... + 17617.

It is an arithmetic number, because the mean of its divisors is an integer number (5311698).

Almost surely, 2^66030172 is an apocalyptic number.

It is an amenable number.

66030172 is a deficient number, since it is larger than the sum of its proper divisors (61450580).

66030172 is a wasteful number, since it uses less digits than its factorization.

66030172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31029 (or 31027 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 66030172 is about 8125.8951506896. The cubic root of 66030172 is about 404.1855746471.

The spelling of 66030172 in words is "sixty-six million, thirty thousand, one hundred seventy-two".