3966782680 has 128 divisors (see below), whose sum is σ = 10473914880. Its totient is φ = 1323786240.

The previous prime is 3966782647. The next prime is 3966782683. The reversal of 3966782680 is 862876693.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966782683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6874552 + ... + 6875128.

It is an arithmetic number, because the mean of its divisors is an integer number (81827460).

Almost surely, 2^3966782680 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 3966782680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5236957440).

3966782680 is an abundant number, since it is smaller than the sum of its proper divisors (6507132200).

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

3966782680 is a wasteful number, since it uses less digits than its factorization.

3966782680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The square root of 3966782680 is about 62982.3997637435. The cubic root of 3966782680 is about 1582.9947314597.

The spelling of 3966782680 in words is "three billion, nine hundred sixty-six million, seven hundred eighty-two thousand, six hundred eighty".