2644660226 has 16 divisors (see below), whose sum is σ = 4304760768. Its totient is φ = 1211293200.

The previous prime is 2644660177. The next prime is 2644660241. The reversal of 2644660226 is 6220664462.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2644660226.

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, 384830 + ... + 391641.

It is an arithmetic number, because the mean of its divisors is an integer number (269047548).

Almost surely, 2^2644660226 is an apocalyptic number.

2644660226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2644660226 is a deficient number, since it is larger than the sum of its proper divisors (1660100542).

2644660226 is a wasteful number, since it uses less digits than its factorization.

2644660226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776617.

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 2644660226 is about 51426.2600817909. The cubic root of 2644660226 is about 1382.8974036603.

The spelling of 2644660226 in words is "two billion, six hundred forty-four million, six hundred sixty thousand, two hundred twenty-six".