2644722 has 24 divisors (see below), whose sum is σ = 5760300. Its totient is φ = 876960.

The previous prime is 2644709. The next prime is 2644727. The reversal of 2644722 is 2274462.

It is a happy number.

2644722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2499561 + 145161 = 1581^2 + 381^2 .

It is not an unprimeable number, because it can be changed into a prime (2644727) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6072 + ... + 6492.

2^2644722 is an apocalyptic number.

2644722 is an abundant number, since it is smaller than the sum of its proper divisors (3115578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2644722 is a wasteful number, since it uses less digits than its factorization.

2644722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 775 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 2644722 is about 1626.2601267940. The cubic root of 2644722 is about 138.2908170820.

The spelling of 2644722 in words is "two million, six hundred forty-four thousand, seven hundred twenty-two".