90530863 has 4 divisors (see below), whose sum is σ = 90641160. Its totient is φ = 90420568.

The previous prime is 90530827. The next prime is 90530873. The reversal of 90530863 is 36803509.

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

It is a cyclic number.

It is not a de Polignac number, because 90530863 - 2¹⁷ = 90399791 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 (90530873) 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, 53908 + ... + 55561.

It is an arithmetic number, because the mean of its divisors is an integer number (22660290).

Almost surely, 2^90530863 is an apocalyptic number.

90530863 is a deficient number, since it is larger than the sum of its proper divisors (110297).

90530863 is a wasteful number, since it uses less digits than its factorization.

90530863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110296.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 90530863 is about 9514.7707802133. The cubic root of 90530863 is about 449.0198634407.

The spelling of 90530863 in words is "ninety million, five hundred thirty thousand, eight hundred sixty-three".