664476225607 has 2 divisors, whose sum is σ = 664476225608. Its totient is φ = 664476225606.

The previous prime is 664476225557. The next prime is 664476225629. The reversal of 664476225607 is 706522674466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664476225607 - 2³⁵ = 630116487239 is a prime.

It is a super-3 number, since 3×664476225607³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664476225407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332238112803 + 332238112804.

It is an arithmetic number, because the mean of its divisors is an integer number (332238112804).

Almost surely, 2^664476225607 is an apocalyptic number.

664476225607 is a deficient number, since it is larger than the sum of its proper divisors (1).

664476225607 is an equidigital number, since it uses as much as digits as its factorization.

664476225607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 55.

The spelling of 664476225607 in words is "six hundred sixty-four billion, four hundred seventy-six million, two hundred twenty-five thousand, six hundred seven".