2644533 has 12 divisors (see below), whose sum is σ = 3883308. Its totient is φ = 1733760.

The previous prime is 2644531. The next prime is 2644547. The reversal of 2644533 is 3354462.

It can be written as a sum of positive squares in 2 ways, for example, as 154449 + 2490084 = 393^2 + 1578^2 .

It is not a de Polignac number, because 2644533 - 2¹ = 2644531 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 6⁴ + 4 + 4¹⁰ + 5³ + 3⁴ + 3¹³ .

It is a junction number, because it is equal to n+sod(n) for n = 2644497 and 2644506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1860 + ... + 2957.

It is an arithmetic number, because the mean of its divisors is an integer number (323609).

2^2644533 is an apocalyptic number.

It is an amenable number.

2644533 is a deficient number, since it is larger than the sum of its proper divisors (1238775).

2644533 is a wasteful number, since it uses less digits than its factorization.

2644533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884 (or 4881 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 2644533 is about 1626.2020169708. The cubic root of 2644533 is about 138.2875227740.

Adding to 2644533 its reverse (3354462), we get a palindrome (5998995).

The spelling of 2644533 in words is "two million, six hundred forty-four thousand, five hundred thirty-three".