10809605 has 16 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 8269632.

The previous prime is 10809599. The next prime is 10809611. The reversal of 10809605 is 50690801.

It is an interprime number because it is at equal distance from previous prime (10809599) and next prime (10809611).

It is a cyclic number.

It is not a de Polignac number, because 10809605 - 2⁸ = 10809349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18122 + ... + 18708.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^10809605 is an apocalyptic number.

It is an amenable number.

10809605 is a deficient number, since it is larger than the sum of its proper divisors (2737915).

10809605 is a wasteful number, since it uses less digits than its factorization.

10809605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 10809605 is about 3287.7963744733. The cubic root of 10809605 is about 221.1073985069.

The spelling of 10809605 in words is "ten million, eight hundred nine thousand, six hundred five".