87166127 has 2 divisors, whose sum is σ = 87166128. Its totient is φ = 87166126.

The previous prime is 87166111. The next prime is 87166139. The reversal of 87166127 is 72166178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87166127 - 2⁴ = 87166111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87166427) 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, 43583063 + 43583064.

It is an arithmetic number, because the mean of its divisors is an integer number (43583064).

Almost surely, 2^87166127 is an apocalyptic number.

87166127 is a deficient number, since it is larger than the sum of its proper divisors (1).

87166127 is an equidigital number, since it uses as much as digits as its factorization.

87166127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 87166127 is about 9336.2801478962. The cubic root of 87166127 is about 443.3866198724.

The spelling of 87166127 in words is "eighty-seven million, one hundred sixty-six thousand, one hundred twenty-seven".