866109004 has 12 divisors (see below), whose sum is σ = 1516414984. Its totient is φ = 432847584.

The previous prime is 866109001. The next prime is 866109007. The reversal of 866109004 is 400901668.

It is an interprime number because it is at equal distance from previous prime (866109001) and next prime (866109007).

It is not an unprimeable number, because it can be changed into a prime (866109001) 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 3 ways as a sum of consecutive naturals, for example, 42114 + ... + 59209.

Almost surely, 2^866109004 is an apocalyptic number.

It is an amenable number.

866109004 is a deficient number, since it is larger than the sum of its proper divisors (650305980).

866109004 is a wasteful number, since it uses less digits than its factorization.

866109004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103464 (or 103462 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 866109004 is about 29429.7299342009. The cubic root of 866109004 is about 953.2149633245.

The spelling of 866109004 in words is "eight hundred sixty-six million, one hundred nine thousand, four".