664434860232 has 384 divisors, whose sum is σ = 2061410964480. Its totient is φ = 176939558400.

The previous prime is 664434860227. The next prime is 664434860249. The reversal of 664434860232 is 232068434466.

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 95 ways as a sum of consecutive naturals, for example, 197101507 + ... + 197104877.

It is an arithmetic number, because the mean of its divisors is an integer number (5368257720).

Almost surely, 2^664434860232 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 664434860232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030705482240).

664434860232 is an abundant number, since it is smaller than the sum of its proper divisors (1396976104248).

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

664434860232 is a wasteful number, since it uses less digits than its factorization.

664434860232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665 (or 3650 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 664434860232 in words is "six hundred sixty-four billion, four hundred thirty-four million, eight hundred sixty thousand, two hundred thirty-two".