165013665 has 8 divisors (see below), whose sum is σ = 264021888. Its totient is φ = 88007280.

The previous prime is 165013633. The next prime is 165013669. The reversal of 165013665 is 566310561.

165013665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 165013665 - 2⁵ = 165013633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165013669) 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, 5500441 + ... + 5500470.

It is an arithmetic number, because the mean of its divisors is an integer number (33002736).

Almost surely, 2^165013665 is an apocalyptic number.

165013665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165013665 is a deficient number, since it is larger than the sum of its proper divisors (99008223).

165013665 is a wasteful number, since it uses less digits than its factorization.

165013665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000919.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 165013665 is about 12845.7644770562. The cubic root of 165013665 is about 548.4957962155.

The spelling of 165013665 in words is "one hundred sixty-five million, thirteen thousand, six hundred sixty-five".