86670209 has 8 divisors (see below), whose sum is σ = 89303040. Its totient is φ = 84070336.

The previous prime is 86670193. The next prime is 86670239. The reversal of 86670209 is 90207668.

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 86670209 - 2⁴ = 86670193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86670239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2849 + ... + 13470.

It is an arithmetic number, because the mean of its divisors is an integer number (11162880).

Almost surely, 2^86670209 is an apocalyptic number.

It is an amenable number.

86670209 is a deficient number, since it is larger than the sum of its proper divisors (2632831).

86670209 is a wasteful number, since it uses less digits than its factorization.

86670209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16479.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 86670209 is about 9309.6836143878. The cubic root of 86670209 is about 442.5441606368.

The spelling of 86670209 in words is "eighty-six million, six hundred seventy thousand, two hundred nine".