165998284 has 24 divisors (see below), whose sum is σ = 295390368. Its totient is φ = 81607680.

The previous prime is 165998281. The next prime is 165998293. The reversal of 165998284 is 482899561.

It is not an unprimeable number, because it can be changed into a prime (165998281) 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, 163362 + ... + 164374.

It is an arithmetic number, because the mean of its divisors is an integer number (12307932).

Almost surely, 2^165998284 is an apocalyptic number.

It is an amenable number.

165998284 is a deficient number, since it is larger than the sum of its proper divisors (129392084).

165998284 is a wasteful number, since it uses less digits than its factorization.

165998284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1663 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The square root of 165998284 is about 12884.0321328379. The cubic root of 165998284 is about 549.5845722472.

The spelling of 165998284 in words is "one hundred sixty-five million, nine hundred ninety-eight thousand, two hundred eighty-four".