165459667 has 4 divisors (see below), whose sum is σ = 165670696. Its totient is φ = 165248640.

The previous prime is 165459661. The next prime is 165459689. The reversal of 165459667 is 766954561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165459667 - 2²⁷ = 31241939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165459667.

It is not an unprimeable number, because it can be changed into a prime (165459661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104334 + ... + 105907.

It is an arithmetic number, because the mean of its divisors is an integer number (41417674).

Almost surely, 2^165459667 is an apocalyptic number.

165459667 is a deficient number, since it is larger than the sum of its proper divisors (211029).

165459667 is an equidigital number, since it uses as much as digits as its factorization.

165459667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211028.

The product of its digits is 1360800, while the sum is 49.

The square root of 165459667 is about 12863.1126481890. The cubic root of 165459667 is about 548.9895132165.

The spelling of 165459667 in words is "one hundred sixty-five million, four hundred fifty-nine thousand, six hundred sixty-seven".