90668450 has 12 divisors (see below), whose sum is σ = 168643410. Its totient is φ = 36267360.

The previous prime is 90668447. The next prime is 90668477. The reversal of 90668450 is 5486609.

It can be written as a sum of positive squares in 3 ways, for example, as 36012001 + 54656449 = 6001^2 + 7393^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 906635 + ... + 906734.

Almost surely, 2^90668450 is an apocalyptic number.

90668450 is a deficient number, since it is larger than the sum of its proper divisors (77974960).

90668450 is a wasteful number, since it uses less digits than its factorization.

90668450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813381 (or 1813376 counting only the distinct ones).

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

The square root of 90668450 is about 9521.9982146606. The cubic root of 90668450 is about 449.2472187805.

The spelling of 90668450 in words is "ninety million, six hundred sixty-eight thousand, four hundred fifty".