2663664 has 40 divisors (see below), whose sum is σ = 6940032. Its totient is φ = 880320.

The previous prime is 2663651. The next prime is 2663669. The reversal of 2663664 is 4663662.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9997 + ... + 10259.

2^2663664 is an apocalyptic number.

2663664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2663664 is an abundant number, since it is smaller than the sum of its proper divisors (4276368).

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

2663664 is a wasteful number, since it uses less digits than its factorization.

2663664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 479 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 2663664 is about 1632.0735277554. The cubic root of 2663664 is about 138.6201870028.

The spelling of 2663664 in words is "two million, six hundred sixty-three thousand, six hundred sixty-four".