660673344 has 168 divisors, whose sum is σ = 1890613440. Its totient is φ = 203202560.

The previous prime is 660673291. The next prime is 660673361. The reversal of 660673344 is 443376066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7423252 + ... + 7423340.

Almost surely, 2^660673344 is an apocalyptic number.

660673344 is a gapful number since it is divisible by the number (64) 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 660673344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945306720).

660673344 is an abundant number, since it is smaller than the sum of its proper divisors (1229940096).

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

660673344 is a wasteful number, since it uses less digits than its factorization.

660673344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 39.

The square root of 660673344 is about 25703.5667563862. The cubic root of 660673344 is about 870.9547557853.

The spelling of 660673344 in words is "six hundred sixty million, six hundred seventy-three thousand, three hundred forty-four".