10663889 has 4 divisors (see below), whose sum is σ = 10773924. Its totient is φ = 10553856.

The previous prime is 10663867. The next prime is 10663901. The reversal of 10663889 is 98836601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98836601 = 7433 ⋅13297.

It can be written as a sum of positive squares in 2 ways, for example, as 3330625 + 7333264 = 1825^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 10663889 - 2¹² = 10659793 is a prime.

It is a super-2 number, since 2×10663889² = 227437057208642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10663819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54872 + ... + 55065.

It is an arithmetic number, because the mean of its divisors is an integer number (2693481).

Almost surely, 2^10663889 is an apocalyptic number.

It is an amenable number.

10663889 is a deficient number, since it is larger than the sum of its proper divisors (110035).

10663889 is an equidigital number, since it uses as much as digits as its factorization.

10663889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110034.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 10663889 is about 3265.5610543979. The cubic root of 10663889 is about 220.1093739899.

The spelling of 10663889 in words is "ten million, six hundred sixty-three thousand, eight hundred eighty-nine".