664513323315466 has 8 divisors (see below), whose sum is σ = 997142330885220. Its totient is φ = 332132546353728.

The previous prime is 664513323315463. The next prime is 664513323315529.

664513323315466 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 636930649125225 + 27582674190241 = 25237485^2 + 5251921^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 664513323315466.

It is not an unprimeable number, because it can be changed into a prime (664513323315461) 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, 62057645311 + ... + 62057656018.

Almost surely, 2^{664513323315466} is an apocalyptic number.

664513323315466 is a deficient number, since it is larger than the sum of its proper divisors (332629007569754).

664513323315466 is a wasteful number, since it uses less digits than its factorization.

664513323315466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124115304008.

The product of its digits is 83980800, while the sum is 58.

The spelling of 664513323315466 in words is "six hundred sixty-four trillion, five hundred thirteen billion, three hundred twenty-three million, three hundred fifteen thousand, four hundred sixty-six".