4320320664 has 64 divisors (see below), whose sum is σ = 11789568000. Its totient is φ = 1308424320.

The previous prime is 4320320663. The next prime is 4320320689. The reversal of 4320320664 is 4660230234.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320320663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587442 + ... + 594750.

It is an arithmetic number, because the mean of its divisors is an integer number (184212000).

Almost surely, 2^4320320664 is an apocalyptic number.

4320320664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4320320664 is an abundant number, since it is smaller than the sum of its proper divisors (7469247336).

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

4320320664 is a wasteful number, since it uses less digits than its factorization.

4320320664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9568 (or 9564 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 4320320664 is about 65729.1462290512. The cubic root of 4320320664 is about 1628.6908659975.

Adding to 4320320664 its reverse (4660230234), we get a palindrome (8980550898).

The spelling of 4320320664 in words is "four billion, three hundred twenty million, three hundred twenty thousand, six hundred sixty-four".