664982571000 has 256 divisors, whose sum is σ = 2297147973120. Its totient is φ = 158801280000.

The previous prime is 664982570971. The next prime is 664982571023. The reversal of 664982571000 is 175289466.

664982571000 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 63 ways as a sum of consecutive naturals, for example, 2060620 + ... + 2361380.

It is an arithmetic number, because the mean of its divisors is an integer number (8973234270).

Almost surely, 2^664982571000 is an apocalyptic number.

664982571000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664982571000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148573986560).

664982571000 is an abundant number, since it is smaller than the sum of its proper divisors (1632165402120).

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

664982571000 is a wasteful number, since it uses less digits than its factorization.

664982571000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300863 (or 300849 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 664982571000 in words is "six hundred sixty-four billion, nine hundred eighty-two million, five hundred seventy-one thousand".