90863666 has 16 divisors (see below), whose sum is σ = 141447168. Its totient is φ = 43730400.

The previous prime is 90863653. The next prime is 90863753. The reversal of 90863666 is 66636809.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8006 + ... + 15678.

It is an arithmetic number, because the mean of its divisors is an integer number (8840448).

Almost surely, 2^90863666 is an apocalyptic number.

90863666 is a deficient number, since it is larger than the sum of its proper divisors (50583502).

90863666 is a wasteful number, since it uses less digits than its factorization.

90863666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 90863666 is about 9532.2434924838. The cubic root of 90863666 is about 449.5694086878.

The spelling of 90863666 in words is "ninety million, eight hundred sixty-three thousand, six hundred sixty-six".