2644973 has 4 divisors (see below), whose sum is σ = 2706528. Its totient is φ = 2583420.

The previous prime is 2644927. The next prime is 2644981. The reversal of 2644973 is 3794462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2644973 - 2¹⁸ = 2382829 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6 + 4 + 4¹⁰ + 9 + 7 + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644903) 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 in 3 ways as a sum of consecutive naturals, for example, 30713 + ... + 30798.

It is an arithmetic number, because the mean of its divisors is an integer number (676632).

2^2644973 is an apocalyptic number.

It is an amenable number.

2644973 is a deficient number, since it is larger than the sum of its proper divisors (61555).

2644973 is an equidigital number, since it uses as much as digits as its factorization.

2644973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61554.

The product of its digits is 36288, while the sum is 35.

The square root of 2644973 is about 1626.3372958891. The cubic root of 2644973 is about 138.2951918200.

The spelling of 2644973 in words is "two million, six hundred forty-four thousand, nine hundred seventy-three".