2643544 has 16 divisors (see below), whose sum is σ = 4974120. Its totient is φ = 1317120.

The previous prime is 2643523. The next prime is 2643547. The reversal of 2643544 is 4453462.

It is a d-powerful number, because it can be written as 2 + 6 + 4⁴ + 3¹³ + 5³ + 4⁴ + 4¹⁰ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643547) 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, 3592 + ... + 4264.

2^2643544 is an apocalyptic number.

It is an amenable number.

2643544 is a deficient number, since it is larger than the sum of its proper divisors (2330576).

2643544 is a wasteful number, since it uses less digits than its factorization.

2643544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1166 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 2643544 is about 1625.8979057739. The cubic root of 2643544 is about 138.2702817447.

The spelling of 2643544 in words is "two million, six hundred forty-three thousand, five hundred forty-four".