664605466000 has 320 divisors, whose sum is σ = 1899586990080. Its totient is φ = 220078080000.

The previous prime is 664605465913. The next prime is 664605466051. The reversal of 664605466000 is 664506466.

664605466000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 278192806 + ... + 278195194.

It is an arithmetic number, because the mean of its divisors is an integer number (5936209344).

Almost surely, 2^664605466000 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 664605466000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949793495040).

664605466000 is an abundant number, since it is smaller than the sum of its proper divisors (1234981524080).

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

664605466000 is a wasteful number, since it uses less digits than its factorization.

664605466000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 664605466000 in words is "six hundred sixty-four billion, six hundred five million, four hundred sixty-six thousand".