6663488 has 28 divisors (see below), whose sum is σ = 14241780. Its totient is φ = 3075072.

The previous prime is 6663487. The next prime is 6663493. The reversal of 6663488 is 8843666.

It can be written as a sum of positive squares in 2 ways, for example, as 2534464 + 4129024 = 1592^2 + 2032^2 .

It is a super-2 number, since 2×6663488² = 88804144652288, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663487) 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, 3173 + ... + 4836.

It is an arithmetic number, because the mean of its divisors is an integer number (508635).

Almost surely, 2^6663488 is an apocalyptic number.

It is an amenable number.

6663488 is an abundant number, since it is smaller than the sum of its proper divisors (7578292).

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

6663488 is a wasteful number, since it uses less digits than its factorization.

6663488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034 (or 8024 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 6663488 is about 2581.3732779279. The cubic root of 6663488 is about 188.1772886223.

The spelling of 6663488 in words is "six million, six hundred sixty-three thousand, four hundred eighty-eight".