866337673 has 2 divisors, whose sum is σ = 866337674. Its totient is φ = 866337672.

The previous prime is 866337613. The next prime is 866337679. The reversal of 866337673 is 376733668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 862773129 + 3564544 = 29373^2 + 1888^2 .

It is a cyclic number.

It is not a de Polignac number, because 866337673 - 2¹³ = 866329481 is a prime.

It is not a weakly prime, because it can be changed into another prime (866337679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433168836 + 433168837.

It is an arithmetic number, because the mean of its divisors is an integer number (433168837).

Almost surely, 2^866337673 is an apocalyptic number.

It is an amenable number.

866337673 is a deficient number, since it is larger than the sum of its proper divisors (1).

866337673 is an equidigital number, since it uses as much as digits as its factorization.

866337673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 49.

The square root of 866337673 is about 29433.6146777796. The cubic root of 866337673 is about 953.2988448111.

The spelling of 866337673 in words is "eight hundred sixty-six million, three hundred thirty-seven thousand, six hundred seventy-three".