90579663 has 12 divisors (see below), whose sum is σ = 134373928. Its totient is φ = 58754160.

The previous prime is 90579659. The next prime is 90579721. The reversal of 90579663 is 36697509.

It is not a de Polignac number, because 90579663 - 2² = 90579659 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 (90579623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135673 + ... + 136338.

Almost surely, 2^90579663 is an apocalyptic number.

90579663 is a deficient number, since it is larger than the sum of its proper divisors (43794265).

90579663 is a wasteful number, since it uses less digits than its factorization.

90579663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272054 (or 272051 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 90579663 is about 9517.3348685438. The cubic root of 90579663 is about 449.1005292401.

The spelling of 90579663 in words is "ninety million, five hundred seventy-nine thousand, six hundred sixty-three".