86347985 has 4 divisors (see below), whose sum is σ = 103617588. Its totient is φ = 69078384.

The previous prime is 86347969. The next prime is 86348011. The reversal of 86347985 is 58974368.

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 17673616 + 68674369 = 4204^2 + 8287^2 .

It is a cyclic number.

It is not a de Polignac number, because 86347985 - 2⁴ = 86347969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8634794 + ... + 8634803.

It is an arithmetic number, because the mean of its divisors is an integer number (25904397).

Almost surely, 2^86347985 is an apocalyptic number.

It is an amenable number.

86347985 is a deficient number, since it is larger than the sum of its proper divisors (17269603).

86347985 is a wasteful number, since it uses less digits than its factorization.

86347985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17269602.

The product of its digits is 1451520, while the sum is 50.

The square root of 86347985 is about 9292.3616481495. The cubic root of 86347985 is about 441.9950467972.

The spelling of 86347985 in words is "eighty-six million, three hundred forty-seven thousand, nine hundred eighty-five".