866680711 has 16 divisors (see below), whose sum is σ = 972917344. Its totient is φ = 766744704.

The previous prime is 866680709. The next prime is 866680777. The reversal of 866680711 is 117086668.

It is a cyclic number.

It is not a de Polignac number, because 866680711 - 2¹ = 866680709 is a prime.

It is a super-2 number, since 2×866680711² = 1502270909638931042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866684711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18781 + ... + 45673.

It is an arithmetic number, because the mean of its divisors is an integer number (60807334).

Almost surely, 2^866680711 is an apocalyptic number.

866680711 is a deficient number, since it is larger than the sum of its proper divisors (106236633).

866680711 is a wasteful number, since it uses less digits than its factorization.

866680711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27010.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 866680711 is about 29439.4414179345. The cubic root of 866680711 is about 953.4246520209.

The spelling of 866680711 in words is "eight hundred sixty-six million, six hundred eighty thousand, seven hundred eleven".