12259866 has 16 divisors (see below), whose sum is σ = 25365600. Its totient is φ = 3945648.

The previous prime is 12259853. The next prime is 12259879. The reversal of 12259866 is 66895221.

It is an interprime number because it is at equal distance from previous prime (12259853) and next prime (12259879).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35056 + ... + 35403.

It is an arithmetic number, because the mean of its divisors is an integer number (1585350).

Almost surely, 2^12259866 is an apocalyptic number.

12259866 is an abundant number, since it is smaller than the sum of its proper divisors (13105734).

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

12259866 is a wasteful number, since it uses less digits than its factorization.

12259866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70493.

The product of its digits is 51840, while the sum is 39.

The square root of 12259866 is about 3501.4091449015. The cubic root of 12259866 is about 230.5836844784.

The spelling of 12259866 in words is "twelve million, two hundred fifty-nine thousand, eight hundred sixty-six".