2663990784 has 240 divisors, whose sum is σ = 9464206752. Its totient is φ = 702480384.

The previous prime is 2663990753. The next prime is 2663990789. The reversal of 2663990784 is 4870993662.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2663990784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663990789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 416152 + ... + 422504.

Almost surely, 2^2663990784 is an apocalyptic number.

2663990784 is a gapful number since it is divisible by the number (24) 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 2663990784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4732103376).

2663990784 is an abundant number, since it is smaller than the sum of its proper divisors (6800215968).

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

2663990784 is a wasteful number, since it uses less digits than its factorization.

2663990784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397 (or 6378 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 2663990784 is about 51613.8623239920. The cubic root of 2663990784 is about 1386.2585551137.

The spelling of 2663990784 in words is "two billion, six hundred sixty-three million, nine hundred ninety thousand, seven hundred eighty-four".