6244738866 has 12 divisors (see below), whose sum is σ = 13530267582. Its totient is φ = 2081579616.

The previous prime is 6244738849. The next prime is 6244738879. The reversal of 6244738866 is 6688374426.

6244738866 is a `hidden beast` number, since 62 + 447 + 3 + 88 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5937473025 + 307265841 = 77055^2 + 17529^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173464951 + ... + 173464986.

Almost surely, 2^6244738866 is an apocalyptic number.

6244738866 is an abundant number, since it is smaller than the sum of its proper divisors (7285528716).

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

6244738866 is a wasteful number, since it uses less digits than its factorization.

6244738866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346929945 (or 346929942 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The square root of 6244738866 is about 79023.6601658010. The cubic root of 6244738866 is about 1841.4987460018.

The spelling of 6244738866 in words is "six billion, two hundred forty-four million, seven hundred thirty-eight thousand, eight hundred sixty-six".