165065560 has 32 divisors (see below), whose sum is σ = 405162000. Its totient is φ = 60023680.

The previous prime is 165065543. The next prime is 165065587. The reversal of 165065560 is 65560561.

It is a super-2 number, since 2×165065560² = 54493278196227200, which contains 22 as substring.

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, 187135 + ... + 188014.

Almost surely, 2^165065560 is an apocalyptic number.

165065560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165065560 is an abundant number, since it is smaller than the sum of its proper divisors (240096440).

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

165065560 is a wasteful number, since it uses less digits than its factorization.

165065560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375171 (or 375167 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 165065560 is about 12847.7842447638. The cubic root of 165065560 is about 548.5532888399.

The spelling of 165065560 in words is "one hundred sixty-five million, sixty-five thousand, five hundred sixty".