11599985 has 4 divisors (see below), whose sum is σ = 13919988. Its totient is φ = 9279984.

The previous prime is 11599979. The next prime is 11599999. The reversal of 11599985 is 58999511.

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 3810304 + 7789681 = 1952^2 + 2791^2 .

It is a cyclic number.

It is not a de Polignac number, because 11599985 - 2⁴ = 11599969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159994 + ... + 1160003.

It is an arithmetic number, because the mean of its divisors is an integer number (3479997).

Almost surely, 2^11599985 is an apocalyptic number.

It is an amenable number.

11599985 is a deficient number, since it is larger than the sum of its proper divisors (2320003).

11599985 is an equidigital number, since it uses as much as digits as its factorization.

11599985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320002.

The product of its digits is 145800, while the sum is 47.

The square root of 11599985 is about 3405.8750711087. The cubic root of 11599985 is about 226.3701416192.

The spelling of 11599985 in words is "eleven million, five hundred ninety-nine thousand, nine hundred eighty-five".