3663996996 has 96 divisors (see below), whose sum is σ = 9812275200. Its totient is φ = 1053781120.

The previous prime is 3663996989. The next prime is 3663997009. The reversal of 3663996996 is 6996993663.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217741 + ... + 233963.

It is an arithmetic number, because the mean of its divisors is an integer number (102211200).

Almost surely, 2^3663996996 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 3663996996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4906137600).

3663996996 is an abundant number, since it is smaller than the sum of its proper divisors (6148278204).

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

3663996996 is a wasteful number, since it uses less digits than its factorization.

3663996996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16329 (or 16327 counting only the distinct ones).

The product of its digits is 76527504, while the sum is 66.

The square root of 3663996996 is about 60530.9589879427. The cubic root of 3663996996 is about 1541.6473343155.

The spelling of 3663996996 in words is "three billion, six hundred sixty-three million, nine hundred ninety-six thousand, nine hundred ninety-six".