90115663 has 8 divisors (see below), whose sum is σ = 100706256. Its totient is φ = 79924800.

The previous prime is 90115661. The next prime is 90115693. The reversal of 90115663 is 36651109.

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

It is a cyclic number.

It is not a de Polignac number, because 90115663 - 2¹ = 90115661 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 (90115661) 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, 99456 + ... + 100357.

It is an arithmetic number, because the mean of its divisors is an integer number (12588282).

Almost surely, 2^90115663 is an apocalyptic number.

90115663 is a deficient number, since it is larger than the sum of its proper divisors (10590593).

90115663 is a wasteful number, since it uses less digits than its factorization.

90115663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199865.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 90115663 is about 9492.9269985606. The cubic root of 90115663 is about 448.3323675563.

The spelling of 90115663 in words is "ninety million, one hundred fifteen thousand, six hundred sixty-three".