8378866 has 16 divisors (see below), whose sum is σ = 13075200. Its totient is φ = 4022640.

The previous prime is 8378863. The next prime is 8378869. The reversal of 8378866 is 6688738.

It is an interprime number because it is at equal distance from previous prime (8378863) and next prime (8378869).

It is not an unprimeable number, because it can be changed into a prime (8378863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8785 + ... + 9691.

It is an arithmetic number, because the mean of its divisors is an integer number (817200).

Almost surely, 2^8378866 is an apocalyptic number.

8378866 is a deficient number, since it is larger than the sum of its proper divisors (4696334).

8378866 is a wasteful number, since it uses less digits than its factorization.

8378866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its digits is 387072, while the sum is 46.

The square root of 8378866 is about 2894.6270916994. The cubic root of 8378866 is about 203.1086478671.

The spelling of 8378866 in words is "eight million, three hundred seventy-eight thousand, eight hundred sixty-six".