86761187 has 2 divisors, whose sum is σ = 86761188. Its totient is φ = 86761186.

The previous prime is 86761111. The next prime is 86761231. The reversal of 86761187 is 78116768.

It is an a-pointer prime, because the next prime (86761231) can be obtained adding 86761187 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86761187 is a prime.

It is not a weakly prime, because it can be changed into another prime (86760187) 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, 43380593 + 43380594.

It is an arithmetic number, because the mean of its divisors is an integer number (43380594).

Almost surely, 2^86761187 is an apocalyptic number.

86761187 is a deficient number, since it is larger than the sum of its proper divisors (1).

86761187 is an equidigital number, since it uses as much as digits as its factorization.

86761187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 44.

The square root of 86761187 is about 9314.5685353644. The cubic root of 86761187 is about 442.6989531685.

The spelling of 86761187 in words is "eighty-six million, seven hundred sixty-one thousand, one hundred eighty-seven".