866001011 has 2 divisors, whose sum is σ = 866001012. Its totient is φ = 866001010.

The previous prime is 866000909. The next prime is 866001041. The reversal of 866001011 is 110100668.

It is a happy number.

866001011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866001011 - 2¹⁰ = 865999987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (866001041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433000505 + 433000506.

It is an arithmetic number, because the mean of its divisors is an integer number (433000506).

Almost surely, 2^866001011 is an apocalyptic number.

866001011 is a deficient number, since it is larger than the sum of its proper divisors (1).

866001011 is an equidigital number, since it uses as much as digits as its factorization.

866001011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 866001011 is about 29427.8951167086. The cubic root of 866001011 is about 953.1753436685.

Adding to 866001011 its reverse (110100668), we get a palindrome (976101679).

The spelling of 866001011 in words is "eight hundred sixty-six million, one thousand, eleven".