6668757 has 16 divisors (see below), whose sum is σ = 9921280. Its totient is φ = 4427136.

The previous prime is 6668747. The next prime is 6668759. The reversal of 6668757 is 7578666.

It is not a de Polignac number, because 6668757 - 2¹² = 6664661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9573 + ... + 10245.

It is an arithmetic number, because the mean of its divisors is an integer number (620080).

Almost surely, 2^6668757 is an apocalyptic number.

It is an amenable number.

6668757 is a deficient number, since it is larger than the sum of its proper divisors (3252523).

6668757 is a wasteful number, since it uses less digits than its factorization.

6668757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1043 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 6668757 is about 2582.3936570554. The cubic root of 6668757 is about 188.2268745104.

Subtracting 6668757 from its reverse (7578666), we obtain a palindrome (909909).

The spelling of 6668757 in words is "six million, six hundred sixty-eight thousand, seven hundred fifty-seven".