2663864 has 16 divisors (see below), whose sum is σ = 5708400. Its totient is φ = 1141632.

The previous prime is 2663831. The next prime is 2663867. The reversal of 2663864 is 4683662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663867) 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, 23729 + ... + 23840.

It is an arithmetic number, because the mean of its divisors is an integer number (356775).

2^2663864 is an apocalyptic number.

It is an amenable number.

2663864 is an abundant number, since it is smaller than the sum of its proper divisors (3044536).

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

2663864 is a wasteful number, since it uses less digits than its factorization.

2663864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47582 (or 47578 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 2663864 is about 1632.1347983546. The cubic root of 2663864 is about 138.6236563272.

The spelling of 2663864 in words is "two million, six hundred sixty-three thousand, eight hundred sixty-four".