90065290 has 16 divisors (see below), whose sum is σ = 185277312. Its totient is φ = 30879504.

The previous prime is 90065279. The next prime is 90065347. The reversal of 90065290 is 9256009.

It is a super-2 number, since 2×90065290² = 16223512925568200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643254 + ... + 643393.

It is an arithmetic number, because the mean of its divisors is an integer number (11579832).

Almost surely, 2^90065290 is an apocalyptic number.

90065290 is an abundant number, since it is smaller than the sum of its proper divisors (95212022).

90065290 is a wasteful number, since it uses less digits than its factorization.

90065290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286661.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 90065290 is about 9490.2734417929. The cubic root of 90065290 is about 448.2488154674.

The spelling of 90065290 in words is "ninety million, sixty-five thousand, two hundred ninety".