165326601 has 8 divisors (see below), whose sum is σ = 240475104. Its totient is φ = 100197920.

The previous prime is 165326573. The next prime is 165326617. The reversal of 165326601 is 106623561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165326601 - 2⁵ = 165326569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165326671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504916 + ... + 2504981.

It is an arithmetic number, because the mean of its divisors is an integer number (30059388).

Almost surely, 2^165326601 is an apocalyptic number.

165326601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

165326601 is a deficient number, since it is larger than the sum of its proper divisors (75148503).

165326601 is a wasteful number, since it uses less digits than its factorization.

165326601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009911.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 165326601 is about 12857.9392205750. The cubic root of 165326601 is about 548.8423042684.

The spelling of 165326601 in words is "one hundred sixty-five million, three hundred twenty-six thousand, six hundred one".