10663209 has 12 divisors (see below), whose sum is σ = 15490800. Its totient is φ = 7068024.

The previous prime is 10663193. The next prime is 10663217. The reversal of 10663209 is 90236601.

It is a happy number.

It is not a de Polignac number, because 10663209 - 2⁴ = 10663193 is a prime.

It is a super-2 number, since 2×10663209² = 227408052355362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10663309) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1699 + ... + 4920.

It is an arithmetic number, because the mean of its divisors is an integer number (1290900).

Almost surely, 2^10663209 is an apocalyptic number.

It is an amenable number.

10663209 is a deficient number, since it is larger than the sum of its proper divisors (4827591).

10663209 is a wasteful number, since it uses less digits than its factorization.

10663209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804 (or 6801 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 10663209 is about 3265.4569358667. The cubic root of 10663209 is about 220.1046953479.

The spelling of 10663209 in words is "ten million, six hundred sixty-three thousand, two hundred nine".