664332614305 has 4 divisors (see below), whose sum is σ = 797199137172. Its totient is φ = 531466091440.

The previous prime is 664332614243. The next prime is 664332614317. The reversal of 664332614305 is 503416233466.

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

It can be written as a sum of positive squares in 2 ways, for example, as 247367964321 + 416964649984 = 497361^2 + 645728^2 .

It is not a de Polignac number, because 664332614305 - 2⁹ = 664332613793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66433261426 + ... + 66433261435.

It is an arithmetic number, because the mean of its divisors is an integer number (199299784293).

Almost surely, 2^664332614305 is an apocalyptic number.

It is an amenable number.

664332614305 is a deficient number, since it is larger than the sum of its proper divisors (132866522867).

664332614305 is a wasteful number, since it uses less digits than its factorization.

664332614305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132866522866.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 664332614305 in words is "six hundred sixty-four billion, three hundred thirty-two million, six hundred fourteen thousand, three hundred five".