747999866 has 16 divisors (see below), whose sum is σ = 1189557600. Its totient is φ = 351764208.

The previous prime is 747999851. The next prime is 747999869. The reversal of 747999866 is 668999747.

747999866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (747999869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65525 + ... + 76088.

It is an arithmetic number, because the mean of its divisors is an integer number (74347350).

Almost surely, 2^747999866 is an apocalyptic number.

747999866 is a deficient number, since it is larger than the sum of its proper divisors (441557734).

747999866 is a wasteful number, since it uses less digits than its factorization.

747999866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141773.

The product of its digits is 41150592, while the sum is 65.

The square root of 747999866 is about 27349.5862125920. The cubic root of 747999866 is about 907.7519141173.

The spelling of 747999866 in words is "seven hundred forty-seven million, nine hundred ninety-nine thousand, eight hundred sixty-six".