11618861 has 8 divisors (see below), whose sum is σ = 12369600. Its totient is φ = 10882080.

The previous prime is 11618843. The next prime is 11618881. The reversal of 11618861 is 16881611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11618861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618801) 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, 1745 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (1546200).

Almost surely, 2^11618861 is an apocalyptic number.

It is an amenable number.

11618861 is a deficient number, since it is larger than the sum of its proper divisors (750739).

11618861 is an equidigital number, since it uses as much as digits as its factorization.

11618861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979.

The product of its digits is 2304, while the sum is 32.

The square root of 11618861 is about 3408.6450387214. The cubic root of 11618861 is about 226.4928615241.

The spelling of 11618861 in words is "eleven million, six hundred eighteen thousand, eight hundred sixty-one".