866272877 has 2 divisors, whose sum is σ = 866272878. Its totient is φ = 866272876.

The previous prime is 866272873. The next prime is 866272919. The reversal of 866272877 is 778272668.

866272877 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 can be written as a sum of positive squares in only one way, i.e., 751911241 + 114361636 = 27421^2 + 10694^2 .

It is a cyclic number.

It is not a de Polignac number, because 866272877 - 2² = 866272873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866272873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433136438 + 433136439.

It is an arithmetic number, because the mean of its divisors is an integer number (433136439).

Almost surely, 2^866272877 is an apocalyptic number.

It is an amenable number.

866272877 is a deficient number, since it is larger than the sum of its proper divisors (1).

866272877 is an equidigital number, since it uses as much as digits as its factorization.

866272877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 53.

The square root of 866272877 is about 29432.5139429169. The cubic root of 866272877 is about 953.2750775227.

The spelling of 866272877 in words is "eight hundred sixty-six million, two hundred seventy-two thousand, eight hundred seventy-seven".