86781127 has 2 divisors, whose sum is σ = 86781128. Its totient is φ = 86781126.

The previous prime is 86781109. The next prime is 86781131. The reversal of 86781127 is 72118768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86781127 - 2²³ = 78392519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86781127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86781197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43390563 + 43390564.

It is an arithmetic number, because the mean of its divisors is an integer number (43390564).

Almost surely, 2^86781127 is an apocalyptic number.

86781127 is a deficient number, since it is larger than the sum of its proper divisors (1).

86781127 is an equidigital number, since it uses as much as digits as its factorization.

86781127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 40.

The square root of 86781127 is about 9315.6388401440. The cubic root of 86781127 is about 442.7328651871.

The spelling of 86781127 in words is "eighty-six million, seven hundred eighty-one thousand, one hundred twenty-seven".