664560545714 has 8 divisors (see below), whose sum is σ = 1073520881580. Its totient is φ = 306720251856.

The previous prime is 664560545611. The next prime is 664560545741. The reversal of 664560545714 is 417545065466.

It can be written as a sum of positive squares in 2 ways, for example, as 660453658489 + 4106887225 = 812683^2 + 64085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12780010469 + ... + 12780010520.

Almost surely, 2^664560545714 is an apocalyptic number.

664560545714 is a deficient number, since it is larger than the sum of its proper divisors (408960335866).

664560545714 is a wasteful number, since it uses less digits than its factorization.

664560545714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560021004.

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 664560545714 in words is "six hundred sixty-four billion, five hundred sixty million, five hundred forty-five thousand, seven hundred fourteen".