107866809 has 20 divisors (see below), whose sum is σ = 163872720. Its totient is φ = 70689240.

The previous prime is 107866799. The next prime is 107866817. The reversal of 107866809 is 908668701.

It is a happy number.

It is not a de Polignac number, because 107866809 - 2⁴ = 107866793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (107866709) 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 19 ways as a sum of consecutive naturals, for example, 6507 + ... + 16064.

It is an arithmetic number, because the mean of its divisors is an integer number (8193636).

Almost surely, 2^107866809 is an apocalyptic number.

It is an amenable number.

107866809 is a deficient number, since it is larger than the sum of its proper divisors (56005911).

107866809 is an equidigital number, since it uses as much as digits as its factorization.

107866809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22642 (or 22633 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 107866809 is about 10385.8947135045. The cubic root of 107866809 is about 476.0244688243.

The spelling of 107866809 in words is "one hundred seven million, eight hundred sixty-six thousand, eight hundred nine".