2644401 has 16 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 1571328.

The previous prime is 2644399. The next prime is 2644403. The reversal of 2644401 is 1044462.

It is an interprime number because it is at equal distance from previous prime (2644399) and next prime (2644403).

It is not a de Polignac number, because 2644401 - 2¹ = 2644399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644403) 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, 396 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (245700).

2^2644401 is an apocalyptic number.

It is an amenable number.

2644401 is a deficient number, since it is larger than the sum of its proper divisors (1286799).

2644401 is a wasteful number, since it uses less digits than its factorization.

2644401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2644401 is about 1626.1614311009. The cubic root of 2644401 is about 138.2852218943.

Adding to 2644401 its reverse (1044462), we get a palindrome (3688863).

The spelling of 2644401 in words is "two million, six hundred forty-four thousand, four hundred one".