90868 has 6 divisors (see below), whose sum is σ = 159026. Its totient is φ = 45432.

The previous prime is 90863. The next prime is 90887. The reversal of 90868 is 86809.

It can be written as a sum of positive squares in only one way, i.e., 71824 + 19044 = 268^2 + 138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11355 + ... + 11362.

2⁹⁰⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

90868 is a deficient number, since it is larger than the sum of its proper divisors (68158).

90868 is a wasteful number, since it uses less digits than its factorization.

90868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22721 (or 22719 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 90868 is about 301.4431953122. The cubic root of 90868 is about 44.9576556403.

The spelling of 90868 in words is "ninety thousand, eight hundred sixty-eight".