90573685 has 4 divisors (see below), whose sum is σ = 108688428. Its totient is φ = 72458944.

The previous prime is 90573683. The next prime is 90573689. The reversal of 90573685 is 58637509.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51523684 + 39050001 = 7178^2 + 6249^2 .

It is a cyclic number.

It is not a de Polignac number, because 90573685 - 2¹ = 90573683 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 (90573683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9057364 + ... + 9057373.

It is an arithmetic number, because the mean of its divisors is an integer number (27172107).

Almost surely, 2^90573685 is an apocalyptic number.

It is an amenable number.

90573685 is a deficient number, since it is larger than the sum of its proper divisors (18114743).

90573685 is a wasteful number, since it uses less digits than its factorization.

90573685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114742.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 90573685 is about 9517.0208048527. The cubic root of 90573685 is about 449.0906492371.

The spelling of 90573685 in words is "ninety million, five hundred seventy-three thousand, six hundred eighty-five".