6690888 has 96 divisors (see below), whose sum is σ = 19624800. Its totient is φ = 2052864.

The previous prime is 6690881. The next prime is 6690899. The reversal of 6690888 is 8880966.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6690881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91620 + ... + 91692.

It is an arithmetic number, because the mean of its divisors is an integer number (204425).

Almost surely, 2^6690888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6690888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9812400).

6690888 is an abundant number, since it is smaller than the sum of its proper divisors (12933912).

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

6690888 is a wasteful number, since it uses less digits than its factorization.

6690888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 6690888 is about 2586.6750858970. The cubic root of 6690888 is about 188.4348617652.

The spelling of 6690888 in words is "six million, six hundred ninety thousand, eight hundred eighty-eight".