6664345007 has 2 divisors, whose sum is σ = 6664345008. Its totient is φ = 6664345006.

The previous prime is 6664345003. The next prime is 6664345031. The reversal of 6664345007 is 7005434666.

6664345007 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6664345007 - 2² = 6664345003 is a prime.

It is a super-3 number, since 3×6664345007³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664345003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332172503 + 3332172504.

It is an arithmetic number, because the mean of its divisors is an integer number (3332172504).

Almost surely, 2^6664345007 is an apocalyptic number.

6664345007 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664345007 is an equidigital number, since it uses as much as digits as its factorization.

6664345007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 41.

The square root of 6664345007 is about 81635.4396509261. The cubic root of 6664345007 is about 1881.8535558564.

The spelling of 6664345007 in words is "six billion, six hundred sixty-four million, three hundred forty-five thousand, seven".