165648001 has 16 divisors (see below), whose sum is σ = 180488448. Its totient is φ = 151588800.

The previous prime is 165647959. The next prime is 165648011. The reversal of 165648001 is 100846561.

It is a cyclic number.

It is not a de Polignac number, because 165648001 - 2²⁵ = 132093569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165648011) 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, 50316 + ... + 53506.

It is an arithmetic number, because the mean of its divisors is an integer number (11280528).

Almost surely, 2^165648001 is an apocalyptic number.

It is an amenable number.

165648001 is a deficient number, since it is larger than the sum of its proper divisors (14840447).

165648001 is a wasteful number, since it uses less digits than its factorization.

165648001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 165648001 is about 12870.4312670555. The cubic root of 165648001 is about 549.1977294917.

The spelling of 165648001 in words is "one hundred sixty-five million, six hundred forty-eight thousand, one".