6663396960 has 480 divisors, whose sum is σ = 26274834432. Its totient is φ = 1576350720.

The previous prime is 6663396937. The next prime is 6663396973. The reversal of 6663396960 is 696933666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 6663396897 and 6663396906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6129537 + ... + 6130623.

Almost surely, 2^6663396960 is an apocalyptic number.

6663396960 is a gapful number since it is divisible by the number (60) 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 6663396960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13137417216).

6663396960 is an abundant number, since it is smaller than the sum of its proper divisors (19611437472).

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

6663396960 is a wasteful number, since it uses less digits than its factorization.

6663396960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 54.

The square root of 6663396960 is about 81629.6328547422. The cubic root of 6663396960 is about 1881.7643162676.

The spelling of 6663396960 in words is "six billion, six hundred sixty-three million, three hundred ninety-six thousand, nine hundred sixty".