11618887 has 8 divisors (see below), whose sum is σ = 13856256. Its totient is φ = 9525912.

The previous prime is 11618881. The next prime is 11618891. The reversal of 11618887 is 78881611.

It is a happy number.

11618887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11618887 - 2¹⁵ = 11586119 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 (11618881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35923 + ... + 36244.

It is an arithmetic number, because the mean of its divisors is an integer number (1732032).

Almost surely, 2^11618887 is an apocalyptic number.

11618887 is a deficient number, since it is larger than the sum of its proper divisors (2237369).

11618887 is an equidigital number, since it uses as much as digits as its factorization.

11618887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72197.

The product of its digits is 21504, while the sum is 40.

The square root of 11618887 is about 3408.6488525514. The cubic root of 11618887 is about 226.4930304681.

The spelling of 11618887 in words is "eleven million, six hundred eighteen thousand, eight hundred eighty-seven".