163590 has 64 divisors (see below), whose sum is σ = 483840. Its totient is φ = 34560.

The previous prime is 163573. The next prime is 163601. The reversal of 163590 is 95361.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 163590.

It is a congruent number.

It is an unprimeable number.

163590 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3970 + ... + 4010.

It is an arithmetic number, because the mean of its divisors is an integer number (7560).

2¹⁶³⁵⁹⁰ is an apocalyptic number.

163590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241920).

163590 is an abundant number, since it is smaller than the sum of its proper divisors (320250).

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

163590 is a wasteful number, since it uses less digits than its factorization.

163590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 163590 is about 404.4626064298. The cubic root of 163590 is about 54.6913844860.

The spelling of 163590 in words is "one hundred sixty-three thousand, five hundred ninety".