664610670822 has 48 divisors (see below), whose sum is σ = 1546335850752. Its totient is φ = 189876632400.

The previous prime is 664610670751. The next prime is 664610670833. The reversal of 664610670822 is 228076016466.

664610670822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5188447 + ... + 5314997.

It is an arithmetic number, because the mean of its divisors is an integer number (32215330224).

Almost surely, 2^664610670822 is an apocalyptic number.

664610670822 is an abundant number, since it is smaller than the sum of its proper divisors (881725179930).

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

664610670822 is a wasteful number, since it uses less digits than its factorization.

664610670822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144433 (or 144426 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 664610670822 in words is "six hundred sixty-four billion, six hundred ten million, six hundred seventy thousand, eight hundred twenty-two".