90985075 has 6 divisors (see below), whose sum is σ = 112821524. Its totient is φ = 72788040.

The previous prime is 90985073. The next prime is 90985087. The reversal of 90985075 is 57058909.

It is not a de Polignac number, because 90985075 - 2¹ = 90985073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90985073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1819677 + ... + 1819726.

Almost surely, 2^90985075 is an apocalyptic number.

90985075 is a deficient number, since it is larger than the sum of its proper divisors (21836449).

90985075 is a wasteful number, since it uses less digits than its factorization.

90985075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639413 (or 3639408 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 90985075 is about 9538.6096995317. The cubic root of 90985075 is about 449.7695527889.

The spelling of 90985075 in words is "ninety million, nine hundred eighty-five thousand, seventy-five".