90668225 has 12 divisors (see below), whose sum is σ = 119042604. Its totient is φ = 68267520.

The previous prime is 90668203. The next prime is 90668233. The reversal of 90668225 is 52286609.

It can be written as a sum of positive squares in 6 ways, for example, as 3936256 + 86731969 = 1984^2 + 9313^2 .

It is not a de Polignac number, because 90668225 - 2¹⁰ = 90667201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106244 + ... + 107093.

It is an arithmetic number, because the mean of its divisors is an integer number (9920217).

Almost surely, 2^90668225 is an apocalyptic number.

It is an amenable number.

90668225 is a deficient number, since it is larger than the sum of its proper divisors (28374379).

90668225 is a wasteful number, since it uses less digits than its factorization.

90668225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213364 (or 213359 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 90668225 is about 9521.9863999063. The cubic root of 90668225 is about 449.2468471676.

The spelling of 90668225 in words is "ninety million, six hundred sixty-eight thousand, two hundred twenty-five".