664560713322 has 48 divisors (see below), whose sum is σ = 1663178692032. Its totient is φ = 189536031360.

The previous prime is 664560713321. The next prime is 664560713329. The reversal of 664560713322 is 223317065466.

664560713322 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 607 + 1 + 3 + 32 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (664560713321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98713318 + ... + 98720049.

It is an arithmetic number, because the mean of its divisors is an integer number (34649556084).

Almost surely, 2^664560713322 is an apocalyptic number.

664560713322 is an abundant number, since it is smaller than the sum of its proper divisors (998617978710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664560713322 is a wasteful number, since it uses less digits than its factorization.

664560713322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197433403 (or 197433400 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

Adding to 664560713322 its reverse (223317065466), we get a palindrome (887877778788).

The spelling of 664560713322 in words is "six hundred sixty-four billion, five hundred sixty million, seven hundred thirteen thousand, three hundred twenty-two".