3666719808 has 84 divisors (see below), whose sum is σ = 10527304320. Its totient is φ = 1220226816.

The previous prime is 3666719803. The next prime is 3666719813. The reversal of 3666719808 is 8089176663.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3666719803) and next prime (3666719813).

It is not an unprimeable number, because it can be changed into a prime (3666719803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367753 + ... + 377591.

Almost surely, 2^3666719808 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 3666719808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5263652160).

3666719808 is an abundant number, since it is smaller than the sum of its proper divisors (6860584512).

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

3666719808 is a wasteful number, since it uses less digits than its factorization.

3666719808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10504 (or 10491 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 3666719808 is about 60553.4458804782. The cubic root of 3666719808 is about 1542.0291192450.

The spelling of 3666719808 in words is "three billion, six hundred sixty-six million, seven hundred nineteen thousand, eight hundred eight".