6123968866 has 4 divisors (see below), whose sum is σ = 9185953302. Its totient is φ = 3061984432.

The previous prime is 6123968849. The next prime is 6123968867. The reversal of 6123968866 is 6688693216.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6001755841 + 122213025 = 77471^2 + 11055^2 .

It is not an unprimeable number, because it can be changed into a prime (6123968867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1530992215 + ... + 1530992218.

Almost surely, 2^6123968866 is an apocalyptic number.

6123968866 is a deficient number, since it is larger than the sum of its proper divisors (3061984436).

6123968866 is a wasteful number, since it uses less digits than its factorization.

6123968866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061984435.

The product of its digits is 4478976, while the sum is 55.

The square root of 6123968866 is about 78255.7912617335. The cubic root of 6123968866 is about 1829.5501762008.

The spelling of 6123968866 in words is "six billion, one hundred twenty-three million, nine hundred sixty-eight thousand, eight hundred sixty-six".