165381696 has 56 divisors (see below), whose sum is σ = 486196640. Its totient is φ = 55126656.

The previous prime is 165381653. The next prime is 165381709. The reversal of 165381696 is 696183561.

165381696 is a `hidden beast` number, since 16 + 538 + 16 + 96 = 666.

It is a super-2 number, since 2×165381696² = 54702210743672832, which contains 22 as substring.

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, 46126 + ... + 49581.

Almost surely, 2^165381696 is an apocalyptic number.

165381696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165381696 is an abundant number, since it is smaller than the sum of its proper divisors (320814944).

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

165381696 is an equidigital number, since it uses as much as digits as its factorization.

165381696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95728 (or 95712 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 165381696 is about 12860.0814927433. The cubic root of 165381696 is about 548.9032646305.

The spelling of 165381696 in words is "one hundred sixty-five million, three hundred eighty-one thousand, six hundred ninety-six".