666027172 has 24 divisors (see below), whose sum is σ = 1193867136. Its totient is φ = 324938208.

The previous prime is 666027143. The next prime is 666027181. The reversal of 666027172 is 271720666.

It is a super-3 number, since 3×666027172³ (a number of 27 digits) contains 333 as substring.

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, 321813 + ... + 323875.

It is an arithmetic number, because the mean of its divisors is an integer number (49744464).

Almost surely, 2^666027172 is an apocalyptic number.

It is an amenable number.

666027172 is a deficient number, since it is larger than the sum of its proper divisors (527839964).

666027172 is a wasteful number, since it uses less digits than its factorization.

666027172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987 (or 3985 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 666027172 is about 25807.5022425650. The cubic root of 666027172 is about 873.3010503512.

The spelling of 666027172 in words is "six hundred sixty-six million, twenty-seven thousand, one hundred seventy-two".