90732085 has 8 divisors (see below), whose sum is σ = 108981720. Its totient is φ = 72516864.

The previous prime is 90732023. The next prime is 90732091. The reversal of 90732085 is 58023709.

It can be written as a sum of positive squares in 4 ways, for example, as 842724 + 89889361 = 918^2 + 9481^2 .

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 90732085 - 2¹⁷ = 90601013 is a prime.

It is a super-2 number, since 2×90732085² = 16464622496894450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90732085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2392 + ... + 13681.

It is an arithmetic number, because the mean of its divisors is an integer number (13622715).

Almost surely, 2^90732085 is an apocalyptic number.

It is an amenable number.

90732085 is a deficient number, since it is larger than the sum of its proper divisors (18249635).

90732085 is a wasteful number, since it uses less digits than its factorization.

90732085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17207.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 90732085 is about 9525.3391015753. The cubic root of 90732085 is about 449.3522945127.

The spelling of 90732085 in words is "ninety million, seven hundred thirty-two thousand, eighty-five".