165922560 has 144 divisors (see below), whose sum is σ = 588917280. Its totient is φ = 44236800.

The previous prime is 165922517. The next prime is 165922583. The reversal of 165922560 is 65229561.

165922560 is a `hidden beast` number, since 1 + 6 + 5 + 92 + 2 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32160 + ... + 36960.

Almost surely, 2^165922560 is an apocalyptic number.

165922560 is a gapful number since it is divisible by the number (10) 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 165922560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294458640).

165922560 is an abundant number, since it is smaller than the sum of its proper divisors (422994720).

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

165922560 is an equidigital number, since it uses as much as digits as its factorization.

165922560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 165922560 is about 12881.0931213154. The cubic root of 165922560 is about 549.5009909175.

The spelling of 165922560 in words is "one hundred sixty-five million, nine hundred twenty-two thousand, five hundred sixty".