664064006267 has 4 divisors (see below), whose sum is σ = 685485425856. Its totient is φ = 642642586680.

The previous prime is 664064006237. The next prime is 664064006381. The reversal of 664064006267 is 762600460466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 664064006267 - 2³⁴ = 646884137083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664064006237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10710709748 + ... + 10710709809.

It is an arithmetic number, because the mean of its divisors is an integer number (171371356464).

Almost surely, 2^664064006267 is an apocalyptic number.

664064006267 is a deficient number, since it is larger than the sum of its proper divisors (21421419589).

664064006267 is a wasteful number, since it uses less digits than its factorization.

664064006267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21421419588.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 664064006267 in words is "six hundred sixty-four billion, sixty-four million, six thousand, two hundred sixty-seven".