666191162 has 48 divisors (see below), whose sum is σ = 1260508032. Its totient is φ = 261727200.

The previous prime is 666191101. The next prime is 666191191. The reversal of 666191162 is 261191666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190643 + ... + 194105.

It is an arithmetic number, because the mean of its divisors is an integer number (26260584).

Almost surely, 2^666191162 is an apocalyptic number.

666191162 is a deficient number, since it is larger than the sum of its proper divisors (594316870).

666191162 is a wasteful number, since it uses less digits than its factorization.

666191162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643 (or 3636 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 666191162 is about 25810.6792239181. The cubic root of 666191162 is about 873.3727195427.

The spelling of 666191162 in words is "six hundred sixty-six million, one hundred ninety-one thousand, one hundred sixty-two".