10655809 has 8 divisors (see below), whose sum is σ = 10964160. Its totient is φ = 10351536.

The previous prime is 10655807. The next prime is 10655819. The reversal of 10655809 is 90855601.

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

It is not a de Polignac number, because 10655809 - 2¹ = 10655807 is a prime.

It is a super-2 number, since 2×10655809² = 227092530888962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10655807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4732 + ... + 6610.

It is an arithmetic number, because the mean of its divisors is an integer number (1370520).

Almost surely, 2^10655809 is an apocalyptic number.

It is an amenable number.

10655809 is a deficient number, since it is larger than the sum of its proper divisors (308351).

10655809 is a wasteful number, since it uses less digits than its factorization.

10655809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 10655809 is about 3264.3236665502. The cubic root of 10655809 is about 220.0537678498.

The spelling of 10655809 in words is "ten million, six hundred fifty-five thousand, eight hundred nine".