90689265 has 12 divisors (see below), whose sum is σ = 157194804. Its totient is φ = 48367584.

The previous prime is 90689251. The next prime is 90689311. The reversal of 90689265 is 56298609.

It can be written as a sum of positive squares in 2 ways, for example, as 12047841 + 78641424 = 3471^2 + 8868^2 .

It is not a de Polignac number, because 90689265 - 2⁵ = 90689233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2015317 = 90689265 / (9 + 0 + 6 + 8 + 9 + 2 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 90689265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1007614 + ... + 1007703.

It is an arithmetic number, because the mean of its divisors is an integer number (13099567).

Almost surely, 2^90689265 is an apocalyptic number.

It is an amenable number.

90689265 is a deficient number, since it is larger than the sum of its proper divisors (66505539).

90689265 is a wasteful number, since it uses less digits than its factorization.

90689265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015328 (or 2015325 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 90689265 is about 9523.0911473114. The cubic root of 90689265 is about 449.2815944477.

The spelling of 90689265 in words is "ninety million, six hundred eighty-nine thousand, two hundred sixty-five".