165651336 has 96 divisors (see below), whose sum is σ = 475450560. Its totient is φ = 51993216.

The previous prime is 165651323. The next prime is 165651337. The reversal of 165651336 is 633156561.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 165651336.

It is not an unprimeable number, because it can be changed into a prime (165651337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110206 + ... + 111698.

It is an arithmetic number, because the mean of its divisors is an integer number (4952610).

Almost surely, 2^165651336 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 165651336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237725280).

165651336 is an abundant number, since it is smaller than the sum of its proper divisors (309799224).

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

165651336 is a wasteful number, since it uses less digits than its factorization.

165651336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595 (or 1588 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 165651336 is about 12870.5608269415. The cubic root of 165651336 is about 549.2014151427.

The spelling of 165651336 in words is "one hundred sixty-five million, six hundred fifty-one thousand, three hundred thirty-six".