90011663 has 8 divisors (see below), whose sum is σ = 104027040. Its totient is φ = 76285440.

The previous prime is 90011659. The next prime is 90011671. The reversal of 90011663 is 36611009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90011663 - 2² = 90011659 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 (90010663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71618 + ... + 72863.

It is an arithmetic number, because the mean of its divisors is an integer number (13003380).

Almost surely, 2^90011663 is an apocalyptic number.

90011663 is a deficient number, since it is larger than the sum of its proper divisors (14015377).

90011663 is a wasteful number, since it uses less digits than its factorization.

90011663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144577.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90011663 is about 9487.4476546646. The cubic root of 90011663 is about 448.1598318283.

The spelling of 90011663 in words is "ninety million, eleven thousand, six hundred sixty-three".