6662688 has 24 divisors (see below), whose sum is σ = 17489808. Its totient is φ = 2220864.

The previous prime is 6662671. The next prime is 6662707. The reversal of 6662688 is 8862666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×6662688² = 88782822770688, 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34606 + ... + 34797.

It is an arithmetic number, because the mean of its divisors is an integer number (728742).

Almost surely, 2^6662688 is an apocalyptic number.

It is an amenable number.

6662688 is an abundant number, since it is smaller than the sum of its proper divisors (10827120).

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

6662688 is a wasteful number, since it uses less digits than its factorization.

6662688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69416 (or 69408 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 6662688 is about 2581.2183169968. The cubic root of 6662688 is about 188.1697576387.

The spelling of 6662688 in words is "six million, six hundred sixty-two thousand, six hundred eighty-eight".