2643684 has 12 divisors (see below), whose sum is σ = 6168624. Its totient is φ = 881224.

The previous prime is 2643677. The next prime is 2643691. The reversal of 2643684 is 4863462.

It is an interprime number because it is at equal distance from previous prime (2643677) and next prime (2643691).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110142 + ... + 110165.

It is an arithmetic number, because the mean of its divisors is an integer number (514052).

2^2643684 is an apocalyptic number.

It is an amenable number.

2643684 is an abundant number, since it is smaller than the sum of its proper divisors (3524940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2643684 is a wasteful number, since it uses less digits than its factorization.

2643684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220314 (or 220312 counting only the distinct ones).

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

The square root of 2643684 is about 1625.9409583377. The cubic root of 2643684 is about 138.2727225965.

The spelling of 2643684 in words is "two million, six hundred forty-three thousand, six hundred eighty-four".