666326304 has 144 divisors (see below), whose sum is σ = 2260893600. Its totient is φ = 190366848.

The previous prime is 666326293. The next prime is 666326317. The reversal of 666326304 is 403623666.

666326304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34467 + ... + 50205.

It is an arithmetic number, because the mean of its divisors is an integer number (15700650).

Almost surely, 2^666326304 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 666326304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130446800).

666326304 is an abundant number, since it is smaller than the sum of its proper divisors (1594567296).

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

666326304 is a wasteful number, since it uses less digits than its factorization.

666326304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15772 (or 15751 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The square root of 666326304 is about 25813.2970385420. The cubic root of 666326304 is about 873.4317723405.

The spelling of 666326304 in words is "six hundred sixty-six million, three hundred twenty-six thousand, three hundred four".