87126911 has 2 divisors, whose sum is σ = 87126912. Its totient is φ = 87126910.

The previous prime is 87126899. The next prime is 87126917. The reversal of 87126911 is 11962178.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87126911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87126917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43563455 + 43563456.

It is an arithmetic number, because the mean of its divisors is an integer number (43563456).

Almost surely, 2^87126911 is an apocalyptic number.

87126911 is a deficient number, since it is larger than the sum of its proper divisors (1).

87126911 is an equidigital number, since it uses as much as digits as its factorization.

87126911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 35.

The square root of 87126911 is about 9334.1797175756. The cubic root of 87126911 is about 443.3201167535.

The spelling of 87126911 in words is "eighty-seven million, one hundred twenty-six thousand, nine hundred eleven".