6366663280 has 20 divisors (see below), whose sum is σ = 14802492312. Its totient is φ = 2546665280.

The previous prime is 6366663271. The next prime is 6366663301. The reversal of 6366663280 is 823666636.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 6366663280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39791566 + ... + 39791725.

Almost surely, 2^6366663280 is an apocalyptic number.

It is an amenable number.

6366663280 is an abundant number, since it is smaller than the sum of its proper divisors (8435829032).

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

6366663280 is a wasteful number, since it uses less digits than its factorization.

6366663280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79583304 (or 79583298 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 46.

The square root of 6366663280 is about 79791.3734685649. The cubic root of 6366663280 is about 1853.4062669341.

The spelling of 6366663280 in words is "six billion, three hundred sixty-six million, six hundred sixty-three thousand, two hundred eighty".