866180768 has 24 divisors (see below), whose sum is σ = 1706956020. Its totient is φ = 432668160.

The previous prime is 866180761. The next prime is 866180789. The reversal of 866180768 is 867081668.

It can be written as a sum of positive squares in 2 ways, for example, as 847275664 + 18905104 = 29108^2 + 4348^2 .

It is not an unprimeable number, because it can be changed into a prime (866180761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21548 + ... + 46868.

Almost surely, 2^866180768 is an apocalyptic number.

It is an amenable number.

866180768 is a deficient number, since it is larger than the sum of its proper divisors (840775252).

866180768 is a wasteful number, since it uses less digits than its factorization.

866180768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26400 (or 26392 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 866180768 is about 29430.9491522105. The cubic root of 866180768 is about 953.2412897372.

The spelling of 866180768 in words is "eight hundred sixty-six million, one hundred eighty thousand, seven hundred sixty-eight".