86187005 has 4 divisors (see below), whose sum is σ = 103424412. Its totient is φ = 68949600.

The previous prime is 86186963. The next prime is 86187011. The reversal of 86187005 is 50078168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56821444 + 29365561 = 7538^2 + 5419^2 .

It is not a de Polignac number, because 86187005 - 2²⁰ = 85138429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8618696 + ... + 8618705.

It is an arithmetic number, because the mean of its divisors is an integer number (25856103).

Almost surely, 2^86187005 is an apocalyptic number.

It is an amenable number.

86187005 is a deficient number, since it is larger than the sum of its proper divisors (17237407).

86187005 is a wasteful number, since it uses less digits than its factorization.

86187005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17237406.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 86187005 is about 9283.6956542101. The cubic root of 86187005 is about 441.7202029958.

The spelling of 86187005 in words is "eighty-six million, one hundred eighty-seven thousand, five".