2684643 has 16 divisors (see below), whose sum is σ = 4058880. Its totient is φ = 1564704.

The previous prime is 2684641. The next prime is 2684651. The reversal of 2684643 is 3464862.

It is not a de Polignac number, because 2684643 - 2¹ = 2684641 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6 + 8⁷ + 4² + 6² + 4⁶ + 3¹⁰ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2684641) 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 15 ways as a sum of consecutive naturals, for example, 1071 + ... + 2552.

It is an arithmetic number, because the mean of its divisors is an integer number (253680).

2^2684643 is an apocalyptic number.

2684643 is a deficient number, since it is larger than the sum of its proper divisors (1374237).

2684643 is a wasteful number, since it uses less digits than its factorization.

2684643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658.

The product of its digits is 27648, while the sum is 33.

The square root of 2684643 is about 1638.4880225379. The cubic root of 2684643 is about 138.9831596319.

The spelling of 2684643 in words is "two million, six hundred eighty-four thousand, six hundred forty-three".