2663688 has 32 divisors (see below), whose sum is σ = 6824160. Its totient is φ = 865920.

The previous prime is 2663677. The next prime is 2663693. The reversal of 2663688 is 8863662.

It is a super-2 number, since 2×2663688² = 14190467522688, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (213255).

2^2663688 is an apocalyptic number.

It is an amenable number.

2663688 is an abundant number, since it is smaller than the sum of its proper divisors (4160472).

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

2663688 is a wasteful number, since it uses less digits than its factorization.

2663688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757 (or 2753 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 2663688 is about 1632.0808803488. The cubic root of 2663688 is about 138.6206033309.

The spelling of 2663688 in words is "two million, six hundred sixty-three thousand, six hundred eighty-eight".