90504065 has 8 divisors (see below), whose sum is σ = 108696168. Its totient is φ = 72342400.

The previous prime is 90504047. The next prime is 90504067. The reversal of 90504065 is 56040509.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 90459121 = 212^2 + 9511^2 .

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

It is not a de Polignac number, because 90504065 - 2¹⁶ = 90438529 is a prime.

It is a Duffinian number.

90504065 is a modest number, since divided by 4065 gives 905 as remainder.

It is not an unprimeable number, because it can be changed into a prime (90504067) 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, 452 + ... + 13461.

It is an arithmetic number, because the mean of its divisors is an integer number (13587021).

Almost surely, 2^90504065 is an apocalyptic number.

It is an amenable number.

90504065 is a deficient number, since it is larger than the sum of its proper divisors (18192103).

90504065 is a wasteful number, since it uses less digits than its factorization.

90504065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15219.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 90504065 is about 9513.3624444778. The cubic root of 90504065 is about 448.9755543459.

The spelling of 90504065 in words is "ninety million, five hundred four thousand, sixty-five".