90590 has 8 divisors (see below), whose sum is σ = 163080. Its totient is φ = 36232.

The previous prime is 90583. The next prime is 90599. The reversal of 90590 is 9509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90599) by changing a digit.

90590 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 3 ways as a sum of consecutive naturals, for example, 4520 + ... + 4539.

It is an arithmetic number, because the mean of its divisors is an integer number (20385).

2⁹⁰⁵⁹⁰ is an apocalyptic number.

90590 is a deficient number, since it is larger than the sum of its proper divisors (72490).

90590 is a wasteful number, since it uses less digits than its factorization.

90590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 90590 is about 300.9817270201. The cubic root of 90590 is about 44.9117612455.

The spelling of 90590 in words is "ninety thousand, five hundred ninety".