11659885 has 16 divisors (see below), whose sum is σ = 14641200. Its totient is φ = 8902656.

The previous prime is 11659871. The next prime is 11659891. The reversal of 11659885 is 58895611.

It can be written as a sum of positive squares in 8 ways, for example, as 24964 + 11634921 = 158^2 + 3411^2 .

It is a cyclic number.

It is not a de Polignac number, because 11659885 - 2¹⁵ = 11627117 is a prime.

Its product of digits (86400) is a multiple of the sum of its prime divisors (960).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13651 + ... + 14479.

It is an arithmetic number, because the mean of its divisors is an integer number (915075).

Almost surely, 2^11659885 is an apocalyptic number.

It is an amenable number.

11659885 is a deficient number, since it is larger than the sum of its proper divisors (2981315).

11659885 is an equidigital number, since it uses as much as digits as its factorization.

11659885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its digits is 86400, while the sum is 43.

The square root of 11659885 is about 3414.6573766631. The cubic root of 11659885 is about 226.7591162191.

It can be divided in two parts, 11659 and 885, that added together give a square (12544 = 112²).

The spelling of 11659885 in words is "eleven million, six hundred fifty-nine thousand, eight hundred eighty-five".