664703330333465 has 16 divisors (see below), whose sum is σ = 797736650545296. Its totient is φ = 531700898534400.

The previous prime is 664703330333407. The next prime is 664703330333489. The reversal of 664703330333465 is 564333033307466.

664703330333465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 5659550598361 + 659043779735104 = 2378981^2 + 25671848^2 .

It is not a de Polignac number, because 664703330333465 - 2¹² = 664703330329369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664703330333465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1557340685 + ... + 1557767445.

It is an arithmetic number, because the mean of its divisors is an integer number (49858540659081).

Almost surely, 2^{664703330333465} is an apocalyptic number.

It is an amenable number.

664703330333465 is a deficient number, since it is larger than the sum of its proper divisors (133033320211831).

664703330333465 is a wasteful number, since it uses less digits than its factorization.

664703330333465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462220.

The product of its (nonzero) digits is 88179840, while the sum is 56.

The spelling of 664703330333465 in words is "six hundred sixty-four trillion, seven hundred three billion, three hundred thirty million, three hundred thirty-three thousand, four hundred sixty-five".