90975 has 12 divisors (see below), whose sum is σ = 150536. Its totient is φ = 48480.

The previous prime is 90971. The next prime is 90977. The reversal of 90975 is 57909.

It is a happy number.

It is not a de Polignac number, because 90975 - 2² = 90971 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 (90971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532 + ... + 681.

2⁹⁰⁹⁷⁵ is an apocalyptic number.

90975 is a deficient number, since it is larger than the sum of its proper divisors (59561).

90975 is a wasteful number, since it uses less digits than its factorization.

90975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 30.

The square root of 90975 is about 301.6206226371. The cubic root of 90975 is about 44.9752950815.

The spelling of 90975 in words is "ninety thousand, nine hundred seventy-five".