90688575 has 12 divisors (see below), whose sum is σ = 149938568. Its totient is φ = 48367200.

The previous prime is 90688573. The next prime is 90688579. The reversal of 90688575 is 57588609.

It is not a de Polignac number, because 90688575 - 2¹ = 90688573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90688573) by changing a digit.

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, 604516 + ... + 604665.

Almost surely, 2^90688575 is an apocalyptic number.

90688575 is a deficient number, since it is larger than the sum of its proper divisors (59249993).

90688575 is a wasteful number, since it uses less digits than its factorization.

90688575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209194 (or 1209189 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 90688575 is about 9523.0549195098. The cubic root of 90688575 is about 449.2804550071.

The spelling of 90688575 in words is "ninety million, six hundred eighty-eight thousand, five hundred seventy-five".