2644287 has 16 divisors (see below), whose sum is σ = 3874560. Its totient is φ = 1596672.

The previous prime is 2644277. The next prime is 2644339. The reversal of 2644287 is 7824462.

It is not a de Polignac number, because 2644287 - 2¹¹ = 2642239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303 + ... + 2319.

It is an arithmetic number, because the mean of its divisors is an integer number (242160).

2^2644287 is an apocalyptic number.

2644287 is a deficient number, since it is larger than the sum of its proper divisors (1230273).

2644287 is a wasteful number, since it uses less digits than its factorization.

2644287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062.

The product of its digits is 21504, while the sum is 33.

The square root of 2644287 is about 1626.1263788525. The cubic root of 2644287 is about 138.2832347093.

The spelling of 2644287 in words is "two million, six hundred forty-four thousand, two hundred eighty-seven".