10820665 has 8 divisors (see below), whose sum is σ = 13111488. Its totient is φ = 8572080.

The previous prime is 10820651. The next prime is 10820699. The reversal of 10820665 is 56602801.

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

It is not a de Polignac number, because 10820665 - 2¹¹ = 10818617 is a prime.

It is an unprimeable number.

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, 9991 + ... + 11020.

It is an arithmetic number, because the mean of its divisors is an integer number (1638936).

Almost surely, 2^10820665 is an apocalyptic number.

It is an amenable number.

10820665 is a deficient number, since it is larger than the sum of its proper divisors (2290823).

10820665 is a wasteful number, since it uses less digits than its factorization.

10820665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21119.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 10820665 is about 3289.4779221025. The cubic root of 10820665 is about 221.1827825217.

The spelling of 10820665 in words is "ten million, eight hundred twenty thousand, six hundred sixty-five".