6240666191 has 2 divisors, whose sum is σ = 6240666192. Its totient is φ = 6240666190.

The previous prime is 6240666151. The next prime is 6240666227. The reversal of 6240666191 is 1916660426.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6240666191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6240666151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3120333095 + 3120333096.

It is an arithmetic number, because the mean of its divisors is an integer number (3120333096).

Almost surely, 2^6240666191 is an apocalyptic number.

6240666191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6240666191 is an equidigital number, since it uses as much as digits as its factorization.

6240666191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 6240666191 is about 78997.8872565590. The cubic root of 6240666191 is about 1841.0983312387.

The spelling of 6240666191 in words is "six billion, two hundred forty million, six hundred sixty-six thousand, one hundred ninety-one".