90831066 has 16 divisors (see below), whose sum is σ = 181764000. Its totient is φ = 30260048.

The previous prime is 90831061. The next prime is 90831109. The reversal of 90831066 is 66013809.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90831061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12325 + ... + 18263.

It is an arithmetic number, because the mean of its divisors is an integer number (11360250).

Almost surely, 2^90831066 is an apocalyptic number.

90831066 is an abundant number, since it is smaller than the sum of its proper divisors (90932934).

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

90831066 is a wasteful number, since it uses less digits than its factorization.

90831066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8493.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90831066 is about 9530.5333533858. The cubic root of 90831066 is about 449.5156368614.

The spelling of 90831066 in words is "ninety million, eight hundred thirty-one thousand, sixty-six".