8861666 has 8 divisors (see below), whose sum is σ = 14500944. Its totient is φ = 4028020.

The previous prime is 8861663. The next prime is 8861683. The reversal of 8861666 is 6661688.

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

It is not an unprimeable number, because it can be changed into a prime (8861663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201380 + ... + 201423.

It is an arithmetic number, because the mean of its divisors is an integer number (1812618).

Almost surely, 2^8861666 is an apocalyptic number.

8861666 is a deficient number, since it is larger than the sum of its proper divisors (5639278).

8861666 is a wasteful number, since it uses less digits than its factorization.

8861666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402816.

The product of its digits is 82944, while the sum is 41.

The square root of 8861666 is about 2976.8550518962. The cubic root of 8861666 is about 206.9371478685.

It can be divided in two parts, 886 and 1666, that added together give a palindrome (2552).

The spelling of 8861666 in words is "eight million, eight hundred sixty-one thousand, six hundred sixty-six".