2644273 has 4 divisors (see below), whose sum is σ = 2654820. Its totient is φ = 2633728.

The previous prime is 2644261. The next prime is 2644277. The reversal of 2644273 is 3724462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2505889 + 138384 = 1583^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644273 - 2²¹ = 547121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2644277) 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, 4888 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (663705).

2^2644273 is an apocalyptic number.

It is an amenable number.

2644273 is a deficient number, since it is larger than the sum of its proper divisors (10547).

2644273 is a wasteful number, since it uses less digits than its factorization.

2644273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546.

The product of its digits is 8064, while the sum is 28.

The square root of 2644273 is about 1626.1220741383. The cubic root of 2644273 is about 138.2829906651.

The spelling of 2644273 in words is "two million, six hundred forty-four thousand, two hundred seventy-three".