165828585 has 16 divisors (see below), whose sum is σ = 285735744. Its totient is φ = 81638592.

The previous prime is 165828563. The next prime is 165828587. The reversal of 165828585 is 585828561.

It is not a de Polignac number, because 165828585 - 2¹¹ = 165826537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165828587) 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, 425007 + ... + 425396.

It is an arithmetic number, because the mean of its divisors is an integer number (17858484).

Almost surely, 2^165828585 is an apocalyptic number.

165828585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165828585 is a deficient number, since it is larger than the sum of its proper divisors (119907159).

165828585 is a wasteful number, since it uses less digits than its factorization.

165828585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850424.

The product of its digits is 768000, while the sum is 48.

The square root of 165828585 is about 12877.4448164222. Note that the first 3 decimals coincide. The cubic root of 165828585 is about 549.3972294442.

The spelling of 165828585 in words is "one hundred sixty-five million, eight hundred twenty-eight thousand, five hundred eighty-five".