10609866 has 56 divisors (see below), whose sum is σ = 25182720. Its totient is φ = 3341736.

The previous prime is 10609849. The next prime is 10609871. The reversal of 10609866 is 66890601.

It is a super-2 number, since 2×10609866² = 225138513075912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10609866.

It is a congruent number.

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 27 ways as a sum of consecutive naturals, for example, 27511 + ... + 27893.

Almost surely, 2^10609866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10609866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12591360).

10609866 is an abundant number, since it is smaller than the sum of its proper divisors (14572854).

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

10609866 is an equidigital number, since it uses as much as digits as its factorization.

10609866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 10609866 is about 3257.2789257293. The cubic root of 10609866 is about 219.7370549981.

The spelling of 10609866 in words is "ten million, six hundred nine thousand, eight hundred sixty-six".