10820566 has 4 divisors (see below), whose sum is σ = 16230852. Its totient is φ = 5410282.

The previous prime is 10820561. The next prime is 10820569. The reversal of 10820566 is 66502801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66502801 = 37 ⋅1797373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10820561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2705140 + ... + 2705143.

It is an arithmetic number, because the mean of its divisors is an integer number (4057713).

Almost surely, 2^10820566 is an apocalyptic number.

10820566 is a deficient number, since it is larger than the sum of its proper divisors (5410286).

10820566 is an equidigital number, since it uses as much as digits as its factorization.

10820566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410285.

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

The square root of 10820566 is about 3289.4628740875. The cubic root of 10820566 is about 221.1821079741.

The spelling of 10820566 in words is "ten million, eight hundred twenty thousand, five hundred sixty-six".