8861868 has 36 divisors (see below), whose sum is σ = 22531600. Its totient is φ = 2936736.

The previous prime is 8861861. The next prime is 8861869. The reversal of 8861868 is 8681688.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (8861861) 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 11 ways as a sum of consecutive naturals, for example, 6546 + ... + 7782.

Almost surely, 2^8861868 is an apocalyptic number.

It is an amenable number.

8861868 is an abundant number, since it is smaller than the sum of its proper divisors (13669732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8861868 is a wasteful number, since it uses less digits than its factorization.

8861868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1441 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 8861868 is about 2976.8889801267. Note that the first 3 decimals coincide. The cubic root of 8861868 is about 206.9387202210.

The spelling of 8861868 in words is "eight million, eight hundred sixty-one thousand, eight hundred sixty-eight".