165799648 has 48 divisors (see below), whose sum is σ = 374419584. Its totient is φ = 70796160.

The previous prime is 165799639. The next prime is 165799747. The reversal of 165799648 is 846997561.

165799648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67563 + ... + 69973.

It is an arithmetic number, because the mean of its divisors is an integer number (7800408).

Almost surely, 2^165799648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165799648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187209792).

165799648 is an abundant number, since it is smaller than the sum of its proper divisors (208619936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165799648 is a wasteful number, since it uses less digits than its factorization.

165799648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735 (or 2727 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The square root of 165799648 is about 12876.3212137629. The cubic root of 165799648 is about 549.3652710770.

The spelling of 165799648 in words is "one hundred sixty-five million, seven hundred ninety-nine thousand, six hundred forty-eight".