165722336 has 48 divisors (see below), whose sum is σ = 354161808. Its totient is φ = 75878400.

The previous prime is 165722321. The next prime is 165722339. The reversal of 165722336 is 633227561.

It is a junction number, because it is equal to n+sod(n) for n = 165722296 and 165722305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165722339) 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, 52976 + ... + 56016.

It is an arithmetic number, because the mean of its divisors is an integer number (7378371).

Almost surely, 2^165722336 is an apocalyptic number.

165722336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165722336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177080904).

165722336 is an abundant number, since it is smaller than the sum of its proper divisors (188439472).

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

165722336 is a wasteful number, since it uses less digits than its factorization.

165722336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195 (or 3187 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 165722336 is about 12873.3187640173. The cubic root of 165722336 is about 549.2798685411.

Adding to 165722336 its reverse (633227561), we get a palindrome (798949897).

The spelling of 165722336 in words is "one hundred sixty-five million, seven hundred twenty-two thousand, three hundred thirty-six".