165672199 has 16 divisors (see below), whose sum is σ = 212138496. Its totient is φ = 125604000.

The previous prime is 165672187. The next prime is 165672203. The reversal of 165672199 is 991276561.

It is a cyclic number.

It is not a de Polignac number, because 165672199 - 2⁵ = 165672167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165672149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26227 + ... + 31924.

It is an arithmetic number, because the mean of its divisors is an integer number (13258656).

Almost surely, 2^165672199 is an apocalyptic number.

165672199 is a deficient number, since it is larger than the sum of its proper divisors (46466297).

165672199 is a wasteful number, since it uses less digits than its factorization.

165672199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58206.

The product of its digits is 204120, while the sum is 46.

The square root of 165672199 is about 12871.3712944659. The cubic root of 165672199 is about 549.2244706125.

The spelling of 165672199 in words is "one hundred sixty-five million, six hundred seventy-two thousand, one hundred ninety-nine".