6668237 has 2 divisors, whose sum is σ = 6668238. Its totient is φ = 6668236.

The previous prime is 6668213. The next prime is 6668257. The reversal of 6668237 is 7328666.

6668237 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3798601 + 2869636 = 1949^2 + 1694^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668237 - 2⁸ = 6667981 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6668237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334118 + 3334119.

It is an arithmetic number, because the mean of its divisors is an integer number (3334119).

Almost surely, 2^6668237 is an apocalyptic number.

It is an amenable number.

6668237 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668237 is an equidigital number, since it uses as much as digits as its factorization.

6668237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 6668237 is about 2582.2929733088. The cubic root of 6668237 is about 188.2219820185.

The spelling of 6668237 in words is "six million, six hundred sixty-eight thousand, two hundred thirty-seven".