866684313 has 16 divisors (see below), whose sum is σ = 1400702400. Its totient is φ = 525263040.

The previous prime is 866684311. The next prime is 866684317. The reversal of 866684313 is 313486668.

866684313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 866684313 - 2¹ = 866684311 is a prime.

It is a super-2 number, since 2×866684313² = 1502283396800563938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (866684311) 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, 1458768 + ... + 1459361.

It is an arithmetic number, because the mean of its divisors is an integer number (87543900).

Almost surely, 2^866684313 is an apocalyptic number.

It is an amenable number.

866684313 is a deficient number, since it is larger than the sum of its proper divisors (534018087).

866684313 is a wasteful number, since it uses less digits than its factorization.

866684313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918149 (or 2918143 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 866684313 is about 29439.5025943035. The cubic root of 866684313 is about 953.4259728575.

The spelling of 866684313 in words is "eight hundred sixty-six million, six hundred eighty-four thousand, three hundred thirteen".