6668811 has 40 divisors (see below), whose sum is σ = 10977120. Its totient is φ = 4015872.

The previous prime is 6668807. The next prime is 6668821. The reversal of 6668811 is 1188666.

It is not a de Polignac number, because 6668811 - 2² = 6668807 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (13824) is a multiple of the sum of its prime divisors (216).

6668811 is a lucky number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6668821) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39850 + ... + 40016.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

Almost surely, 2^6668811 is an apocalyptic number.

6668811 is a deficient number, since it is larger than the sum of its proper divisors (4308309).

6668811 is a wasteful number, since it uses less digits than its factorization.

6668811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 216 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 6668811 is about 2582.4041124503. The cubic root of 6668811 is about 188.2273825623.

The spelling of 6668811 in words is "six million, six hundred sixty-eight thousand, eight hundred eleven".