664614314364 has 864 divisors, whose sum is σ = 2289437740800. Its totient is φ = 148171161600.

The previous prime is 664614314327. The next prime is 664614314387. The reversal of 664614314364 is 463413416466.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1036839484 + ... + 1036840124.

It is an arithmetic number, because the mean of its divisors is an integer number (2649812200).

Almost surely, 2^664614314364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664614314364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144718870400).

664614314364 is an abundant number, since it is smaller than the sum of its proper divisors (1624823426436).

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

664614314364 is a wasteful number, since it uses less digits than its factorization.

664614314364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 755 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 48.

The spelling of 664614314364 in words is "six hundred sixty-four billion, six hundred fourteen million, three hundred fourteen thousand, three hundred sixty-four".