90065799 has 6 divisors (see below), whose sum is σ = 130095056. Its totient is φ = 60043860.

The previous prime is 90065783. The next prime is 90065809. The reversal of 90065799 is 99756009.

It is not a de Polignac number, because 90065799 - 2⁴ = 90065783 is a prime.

It is a super-2 number, since 2×90065799² = 16223696299016802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90065749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5003647 + ... + 5003664.

Almost surely, 2^90065799 is an apocalyptic number.

90065799 is a deficient number, since it is larger than the sum of its proper divisors (40029257).

90065799 is a wasteful number, since it uses less digits than its factorization.

90065799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10007317 (or 10007314 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 90065799 is about 9490.3002586852. The cubic root of 90065799 is about 448.2496598853.

The spelling of 90065799 in words is "ninety million, sixty-five thousand, seven hundred ninety-nine".