664612233017 has 2 divisors, whose sum is σ = 664612233018. Its totient is φ = 664612233016.

The previous prime is 664612233007. The next prime is 664612233079. The reversal of 664612233017 is 710332216466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457305947536 + 207306285481 = 676244^2 + 455309^2 .

It is a cyclic number.

It is not a de Polignac number, because 664612233017 - 2⁴ = 664612233001 is a prime.

It is not a weakly prime, because it can be changed into another prime (664612233007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332306116508 + 332306116509.

It is an arithmetic number, because the mean of its divisors is an integer number (332306116509).

Almost surely, 2^664612233017 is an apocalyptic number.

It is an amenable number.

664612233017 is a deficient number, since it is larger than the sum of its proper divisors (1).

664612233017 is an equidigital number, since it uses as much as digits as its factorization.

664612233017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 664612233017 in words is "six hundred sixty-four billion, six hundred twelve million, two hundred thirty-three thousand, seventeen".