165190666 has 24 divisors (see below), whose sum is σ = 265778496. Its totient is φ = 76981440.

The previous prime is 165190657. The next prime is 165190703. The reversal of 165190666 is 666091561.

It is a super-2 number, since 2×165190666² = 54575912267047112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60511 + ... + 63181.

It is an arithmetic number, because the mean of its divisors is an integer number (11074104).

Almost surely, 2^165190666 is an apocalyptic number.

165190666 is a deficient number, since it is larger than the sum of its proper divisors (100587830).

165190666 is a wasteful number, since it uses less digits than its factorization.

165190666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2797 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 165190666 is about 12852.6520998586. The cubic root of 165190666 is about 548.6918398033.

The spelling of 165190666 in words is "one hundred sixty-five million, one hundred ninety thousand, six hundred sixty-six".