165632416 has 24 divisors (see below), whose sum is σ = 326656260. Its totient is φ = 82672128.

The previous prime is 165632399. The next prime is 165632429. The reversal of 165632416 is 614236561.

It can be written as a sum of positive squares in 2 ways, for example, as 163942416 + 1690000 = 12804^2 + 1300^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15550 + ... + 23938.

Almost surely, 2^165632416 is an apocalyptic number.

165632416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165632416 is a deficient number, since it is larger than the sum of its proper divisors (161023844).

165632416 is an equidigital number, since it uses as much as digits as its factorization.

165632416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016 (or 9008 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 165632416 is about 12869.8257952468. The cubic root of 165632416 is about 549.1805051867.

Adding to 165632416 its reverse (614236561), we get a palindrome (779868977).

The spelling of 165632416 in words is "one hundred sixty-five million, six hundred thirty-two thousand, four hundred sixteen".