90550065 has 16 divisors (see below), whose sum is σ = 145620288. Its totient is φ = 48046656.

The previous prime is 90550051. The next prime is 90550127. The reversal of 90550065 is 56005509.

It is a happy number.

It is not a de Polignac number, because 90550065 - 2⁴ = 90550049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12367 + ... + 18276.

It is an arithmetic number, because the mean of its divisors is an integer number (9101268).

Almost surely, 2^90550065 is an apocalyptic number.

It is an amenable number.

90550065 is a deficient number, since it is larger than the sum of its proper divisors (55070223).

90550065 is a wasteful number, since it uses less digits than its factorization.

90550065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30848.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 90550065 is about 9515.7797893814. The cubic root of 90550065 is about 449.0516075686.

The spelling of 90550065 in words is "ninety million, five hundred fifty thousand, sixty-five".