86861075 has 72 divisors (see below), whose sum is σ = 137147472. Its totient is φ = 54190080.

The previous prime is 86861059. The next prime is 86861081. The reversal of 86861075 is 57016868.

It is not a de Polignac number, because 86861075 - 2⁴ = 86861059 is a prime.

It is an unprimeable number.

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 in 71 ways as a sum of consecutive naturals, for example, 895427 + ... + 895523.

It is an arithmetic number, because the mean of its divisors is an integer number (1904826).

Almost surely, 2^86861075 is an apocalyptic number.

86861075 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

86861075 is a deficient number, since it is larger than the sum of its proper divisors (50286397).

86861075 is a wasteful number, since it uses less digits than its factorization.

86861075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 86861075 is about 9319.9289160379. The cubic root of 86861075 is about 442.8687808497.

The spelling of 86861075 in words is "eighty-six million, eight hundred sixty-one thousand, seventy-five".