11868817 has 4 divisors (see below), whose sum is σ = 12144880. Its totient is φ = 11592756.

The previous prime is 11868811. The next prime is 11868821. The reversal of 11868817 is 71886811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11868817 - 2³ = 11868809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11868817.

It is not an unprimeable number, because it can be changed into a prime (11868811) 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 3 ways as a sum of consecutive naturals, for example, 137967 + ... + 138052.

It is an arithmetic number, because the mean of its divisors is an integer number (3036220).

Almost surely, 2^11868817 is an apocalyptic number.

It is an amenable number.

11868817 is a deficient number, since it is larger than the sum of its proper divisors (276063).

11868817 is an equidigital number, since it uses as much as digits as its factorization.

11868817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276062.

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

The square root of 11868817 is about 3445.1149472841. The cubic root of 11868817 is about 228.1055285063.

The spelling of 11868817 in words is "eleven million, eight hundred sixty-eight thousand, eight hundred seventeen".