664583311084 has 72 divisors (see below), whose sum is σ = 1481146445520. Its totient is φ = 258006873600.

The previous prime is 664583311037. The next prime is 664583311109. The reversal of 664583311084 is 480113385466.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57352 + ... + 1154320.

It is an arithmetic number, because the mean of its divisors is an integer number (20571478410).

Almost surely, 2^664583311084 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 664583311084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740573222760).

664583311084 is an abundant number, since it is smaller than the sum of its proper divisors (816563134436).

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

664583311084 is a wasteful number, since it uses less digits than its factorization.

664583311084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097279 (or 1097270 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 664583311084 in words is "six hundred sixty-four billion, five hundred eighty-three million, three hundred eleven thousand, eighty-four".