11660089 has 24 divisors (see below), whose sum is σ = 14249088. Its totient is φ = 9505440.

The previous prime is 11660041. The next prime is 11660101. The reversal of 11660089 is 98006611.

It is a happy number.

It is not a de Polignac number, because 11660089 - 2¹³ = 11651897 is a prime.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 11660089.

It is not an unprimeable number, because it can be changed into a prime (11660029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140442 + ... + 140524.

It is an arithmetic number, because the mean of its divisors is an integer number (593712).

Almost surely, 2^11660089 is an apocalyptic number.

It is an amenable number.

11660089 is a deficient number, since it is larger than the sum of its proper divisors (2588999).

11660089 is an equidigital number, since it uses as much as digits as its factorization.

11660089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 11660089 is about 3414.6872477578. The cubic root of 11660089 is about 226.7604386618.

The spelling of 11660089 in words is "eleven million, six hundred sixty thousand, eighty-nine".