866482691 has 2 divisors, whose sum is σ = 866482692. Its totient is φ = 866482690.

The previous prime is 866482679. The next prime is 866482709. The reversal of 866482691 is 196284668.

It is a happy number.

866482691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866482691 - 2¹⁰ = 866481667 is a prime.

It is not a weakly prime, because it can be changed into another prime (866482291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433241345 + 433241346.

It is an arithmetic number, because the mean of its divisors is an integer number (433241346).

Almost surely, 2^866482691 is an apocalyptic number.

866482691 is a deficient number, since it is larger than the sum of its proper divisors (1).

866482691 is an equidigital number, since it uses as much as digits as its factorization.

866482691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 50.

The square root of 866482691 is about 29436.0780505828. The cubic root of 866482691 is about 953.3520333784.

The spelling of 866482691 in words is "eight hundred sixty-six million, four hundred eighty-two thousand, six hundred ninety-one".