6668951 has 2 divisors, whose sum is σ = 6668952. Its totient is φ = 6668950.

The previous prime is 6668939. The next prime is 6668953. The reversal of 6668951 is 1598666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6668951 - 2⁶ = 6668887 is a prime.

Together with 6668953, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6668899 and 6668908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334475 + 3334476.

It is an arithmetic number, because the mean of its divisors is an integer number (3334476).

Almost surely, 2^6668951 is an apocalyptic number.

6668951 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668951 is an equidigital number, since it uses as much as digits as its factorization.

6668951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 6668951 is about 2582.4312188324. The cubic root of 6668951 is about 188.2286997211.

The spelling of 6668951 in words is "six million, six hundred sixty-eight thousand, nine hundred fifty-one".