2566632223 has 4 divisors (see below), whose sum is σ = 2566750680. Its totient is φ = 2566513768.

The previous prime is 2566632221. The next prime is 2566632227. The reversal of 2566632223 is 3222366652.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2566632223 - 2¹ = 2566632221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566632221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16408 + ... + 73501.

It is an arithmetic number, because the mean of its divisors is an integer number (641687670).

Almost surely, 2^2566632223 is an apocalyptic number.

2566632223 is a deficient number, since it is larger than the sum of its proper divisors (118457).

2566632223 is an equidigital number, since it uses as much as digits as its factorization.

2566632223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118456.

The product of its digits is 155520, while the sum is 37.

The square root of 2566632223 is about 50661.9405767288. The cubic root of 2566632223 is about 1369.1610867340.

Adding to 2566632223 its reverse (3222366652), we get a palindrome (5788998875).

The spelling of 2566632223 in words is "two billion, five hundred sixty-six million, six hundred thirty-two thousand, two hundred twenty-three".