10809649 has 8 divisors (see below), whose sum is σ = 11007360. Its totient is φ = 10613616.

The previous prime is 10809619. The next prime is 10809653. The reversal of 10809649 is 94690801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10809649 - 2⁷ = 10809521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10809619) 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 7 ways as a sum of consecutive naturals, for example, 22914 + ... + 23380.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^10809649 is an apocalyptic number.

It is an amenable number.

10809649 is a deficient number, since it is larger than the sum of its proper divisors (197711).

10809649 is an equidigital number, since it uses as much as digits as its factorization.

10809649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 10809649 is about 3287.8030658785. The cubic root of 10809649 is about 221.1076985090.

The spelling of 10809649 in words is "ten million, eight hundred nine thousand, six hundred forty-nine".