664562468605 has 16 divisors (see below), whose sum is σ = 925002944640. Its totient is φ = 448898484672.

The previous prime is 664562468573. The next prime is 664562468611. The reversal of 664562468605 is 506864265466.

It is a cyclic number.

It is not a de Polignac number, because 664562468605 - 2⁵ = 664562468573 is a prime.

It is a super-2 number, since 2×664562468605² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 664562468605.

It is a congruent number.

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, 141695410 + ... + 141700099.

It is an arithmetic number, because the mean of its divisors is an integer number (57812684040).

Almost surely, 2^664562468605 is an apocalyptic number.

It is an amenable number.

664562468605 is a deficient number, since it is larger than the sum of its proper divisors (260440476035).

664562468605 is a wasteful number, since it uses less digits than its factorization.

664562468605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283395588.

The product of its (nonzero) digits is 49766400, while the sum is 58.

The spelling of 664562468605 in words is "six hundred sixty-four billion, five hundred sixty-two million, four hundred sixty-eight thousand, six hundred five".