11573863 has 4 divisors (see below), whose sum is σ = 13227280. Its totient is φ = 9920448.

The previous prime is 11573857. The next prime is 11573867. The reversal of 11573863 is 36837511.

11573863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11573863 - 2²¹ = 9476711 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 (11573867) 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, 826698 + ... + 826711.

It is an arithmetic number, because the mean of its divisors is an integer number (3306820).

Almost surely, 2^11573863 is an apocalyptic number.

11573863 is a deficient number, since it is larger than the sum of its proper divisors (1653417).

11573863 is an equidigital number, since it uses as much as digits as its factorization.

11573863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653416.

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

The square root of 11573863 is about 3402.0380656307. The cubic root of 11573863 is about 226.2000929776.

The spelling of 11573863 in words is "eleven million, five hundred seventy-three thousand, eight hundred sixty-three".