90323685 has 12 divisors (see below), whose sum is σ = 156561132. Its totient is φ = 48172608.

The previous prime is 90323683. The next prime is 90323699. The reversal of 90323685 is 58632309.

It can be written as a sum of positive squares in 2 ways, for example, as 25826724 + 64496961 = 5082^2 + 8031^2 .

It is not a de Polignac number, because 90323685 - 2¹ = 90323683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90323683) 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, 1003552 + ... + 1003641.

It is an arithmetic number, because the mean of its divisors is an integer number (13046761).

Almost surely, 2^90323685 is an apocalyptic number.

It is an amenable number.

90323685 is a deficient number, since it is larger than the sum of its proper divisors (66237447).

90323685 is a wasteful number, since it uses less digits than its factorization.

90323685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007204 (or 2007201 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 90323685 is about 9503.8773666331. The cubic root of 90323685 is about 448.6770776105.

The spelling of 90323685 in words is "ninety million, three hundred twenty-three thousand, six hundred eighty-five".