86312005 has 8 divisors (see below), whose sum is σ = 111541752. Its totient is φ = 63738048.

The previous prime is 86311993. The next prime is 86312021. The reversal of 86312005 is 50021368.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3101121 + 83210884 = 1761^2 + 9122^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86312005 - 2⁹ = 86311493 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 7 ways as a sum of consecutive naturals, for example, 663874 + ... + 664003.

It is an arithmetic number, because the mean of its divisors is an integer number (13942719).

Almost surely, 2^86312005 is an apocalyptic number.

It is an amenable number.

86312005 is a deficient number, since it is larger than the sum of its proper divisors (25229747).

86312005 is a wasteful number, since it uses less digits than its factorization.

86312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327895.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 86312005 is about 9290.4254477392. The cubic root of 86312005 is about 441.9336472129.

The spelling of 86312005 in words is "eighty-six million, three hundred twelve thousand, five".