666980352 has 208 divisors, whose sum is σ = 2041852480. Its totient is φ = 214990848.

The previous prime is 666980317. The next prime is 666980383. The reversal of 666980352 is 253089666.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 666980298 and 666980307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4091823 + ... + 4091985.

Almost surely, 2^666980352 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 666980352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020926240).

666980352 is an abundant number, since it is smaller than the sum of its proper divisors (1374872128).

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

666980352 is a wasteful number, since it uses less digits than its factorization.

666980352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 666980352 is about 25825.9627506895. The cubic root of 666980352 is about 873.7174579418.

The spelling of 666980352 in words is "six hundred sixty-six million, nine hundred eighty thousand, three hundred fifty-two".