90566 has 8 divisors (see below), whose sum is σ = 155280. Its totient is φ = 38808.

The previous prime is 90547. The next prime is 90583. The reversal of 90566 is 66509.

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

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, 3221 + ... + 3248.

It is an arithmetic number, because the mean of its divisors is an integer number (19410).

2⁹⁰⁵⁶⁶ is an apocalyptic number.

90566 is a deficient number, since it is larger than the sum of its proper divisors (64714).

90566 is a wasteful number, since it uses less digits than its factorization.

90566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 90566 is about 300.9418548491. The cubic root of 90566 is about 44.9077947390.

It can be divided in two parts, 90 and 566, that added together give a palindrome (656).

The spelling of 90566 in words is "ninety thousand, five hundred sixty-six".