2644463 has 8 divisors (see below), whose sum is σ = 2706816. Its totient is φ = 2583000.

The previous prime is 2644451. The next prime is 2644489. The reversal of 2644463 is 3644462.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2644463 - 2⁶ = 2644399 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 6 + 4² + 4⁵ + 4¹⁰ + 6 + 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 (2644403) 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 7 ways as a sum of consecutive naturals, for example, 12428 + ... + 12638.

It is an arithmetic number, because the mean of its divisors is an integer number (338352).

2^2644463 is an apocalyptic number.

2644463 is a deficient number, since it is larger than the sum of its proper divisors (62353).

2644463 is a wasteful number, since it uses less digits than its factorization.

2644463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its digits is 13824, while the sum is 29.

The square root of 2644463 is about 1626.1804942872. The cubic root of 2644463 is about 138.2863026200.

Subtracting 2644463 from its reverse (3644462), we obtain a palindrome (999999).

The spelling of 2644463 in words is "two million, six hundred forty-four thousand, four hundred sixty-three".