165576560 has 20 divisors (see below), whose sum is σ = 384965688. Its totient is φ = 66230592.

The previous prime is 165576547. The next prime is 165576577. The reversal of 165576560 is 65675561.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 1034774 + ... + 1034933.

Almost surely, 2^165576560 is an apocalyptic number.

165576560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165576560 is an abundant number, since it is smaller than the sum of its proper divisors (219389128).

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

165576560 is a wasteful number, since it uses less digits than its factorization.

165576560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069720 (or 2069714 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 165576560 is about 12867.6555751232. The cubic root of 165576560 is about 549.1187651082.

Subtracting from 165576560 its reverse (65675561), we obtain a palindrome (99900999).

The spelling of 165576560 in words is "one hundred sixty-five million, five hundred seventy-six thousand, five hundred sixty".