6611963904 has 624 divisors, whose sum is σ = 24710870912. Its totient is φ = 1719926784.

The previous prime is 6611963879. The next prime is 6611963921. The reversal of 6611963904 is 4093691166.

6611963904 is a `hidden beast` number, since 6 + 6 + 1 + 1 + 9 + 639 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (624).

It is a self number, because there is not a number n which added to its sum of digits gives 6611963904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90574812 + ... + 90574884.

Almost surely, 2^6611963904 is an apocalyptic number.

6611963904 is a gapful number since it is divisible by the number (64) 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 6611963904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12355435456).

6611963904 is an abundant number, since it is smaller than the sum of its proper divisors (18098907008).

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

6611963904 is an equidigital number, since it uses as much as digits as its factorization.

6611963904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 6611963904 is about 81313.9834468832. The cubic root of 6611963904 is about 1876.9101864260.

The spelling of 6611963904 in words is "six billion, six hundred eleven million, nine hundred sixty-three thousand, nine hundred four".