6487273866 has 16 divisors (see below), whose sum is σ = 13093581600. Its totient is φ = 2142585648.

The previous prime is 6487273853. The next prime is 6487273867. The reversal of 6487273866 is 6683727846.

It is not an unprimeable number, because it can be changed into a prime (6487273867) 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, 4959036 + ... + 4960343.

It is an arithmetic number, because the mean of its divisors is an integer number (818348850).

Almost surely, 2^6487273866 is an apocalyptic number.

6487273866 is an abundant number, since it is smaller than the sum of its proper divisors (6606307734).

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

6487273866 is a wasteful number, since it uses less digits than its factorization.

6487273866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9919493.

The product of its digits is 16257024, while the sum is 57.

The square root of 6487273866 is about 80543.6146817363. The cubic root of 6487273866 is about 1865.0368227485.

The spelling of 6487273866 in words is "six billion, four hundred eighty-seven million, two hundred seventy-three thousand, eight hundred sixty-six".