90356805 has 96 divisors (see below), whose sum is σ = 198132480. Its totient is φ = 37002240.

The previous prime is 90356767. The next prime is 90356807. The reversal of 90356805 is 50865309.

90356805 is a `hidden beast` number, since 90 + 3 + 568 + 0 + 5 = 666.

It is not a de Polignac number, because 90356805 - 2¹⁰ = 90355781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90356805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90356807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 308239 + ... + 308531.

It is an arithmetic number, because the mean of its divisors is an integer number (2063880).

Almost surely, 2^90356805 is an apocalyptic number.

It is an amenable number.

90356805 is an abundant number, since it is smaller than the sum of its proper divisors (107775675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90356805 is a wasteful number, since it uses less digits than its factorization.

90356805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 90356805 is about 9505.6196536575. The cubic root of 90356805 is about 448.7319113965.

The spelling of 90356805 in words is "ninety million, three hundred fifty-six thousand, eight hundred five".