666032158 has 12 divisors (see below), whose sum is σ = 1098127800. Its totient is φ = 302741780.

The previous prime is 666032149. The next prime is 666032197. The reversal of 666032158 is 851230666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1375858 + ... + 1376341.

It is an arithmetic number, because the mean of its divisors is an integer number (91510650).

Almost surely, 2^666032158 is an apocalyptic number.

666032158 is a deficient number, since it is larger than the sum of its proper divisors (432095642).

666032158 is a wasteful number, since it uses less digits than its factorization.

666032158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752223 (or 2752212 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 666032158 is about 25807.5988422015. The cubic root of 666032158 is about 873.3032295757.

The spelling of 666032158 in words is "six hundred sixty-six million, thirty-two thousand, one hundred fifty-eight".