6664345031 has 2 divisors, whose sum is σ = 6664345032. Its totient is φ = 6664345030.

The previous prime is 6664345007. The next prime is 6664345033. The reversal of 6664345031 is 1305434666.

6664345031 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 is a cyclic number.

It is not a de Polignac number, because 6664345031 - 2¹⁴ = 6664328647 is a prime.

It is a super-2 number, since 2×6664345031² = 88826989384428781922, which contains 22 as substring.

Together with 6664345033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664345033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332172515 + 3332172516.

It is an arithmetic number, because the mean of its divisors is an integer number (3332172516).

Almost surely, 2^6664345031 is an apocalyptic number.

6664345031 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664345031 is an equidigital number, since it uses as much as digits as its factorization.

6664345031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 6664345031 is about 81635.4397979211. The cubic root of 6664345031 is about 1881.8535581154.

Adding to 6664345031 its reverse (1305434666), we get a palindrome (7969779697).

The spelling of 6664345031 in words is "six billion, six hundred sixty-four million, three hundred forty-five thousand, thirty-one".