90064165 has 8 divisors (see below), whose sum is σ = 108270360. Its totient is φ = 71922432.

The previous prime is 90064151. The next prime is 90064201. The reversal of 90064165 is 56146009.

It can be written as a sum of positive squares in 4 ways, for example, as 1572516 + 88491649 = 1254^2 + 9407^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90064165 - 2²³ = 81675557 is a prime.

It is a super-2 number, since 2×90064165² = 16223107634294450, which contains 22 as substring.

It is a congruent number.

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, 12984 + ... + 18673.

It is an arithmetic number, because the mean of its divisors is an integer number (13533795).

Almost surely, 2^90064165 is an apocalyptic number.

It is an amenable number.

90064165 is a deficient number, since it is larger than the sum of its proper divisors (18206195).

90064165 is a wasteful number, since it uses less digits than its factorization.

90064165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32231.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 90064165 is about 9490.2141703968. The cubic root of 90064165 is about 448.2469491102.

The spelling of 90064165 in words is "ninety million, sixty-four thousand, one hundred sixty-five".