86906071009 has 4 divisors (see below), whose sum is σ = 86907312900. Its totient is φ = 86904829120.

The previous prime is 86906070989. The next prime is 86906071013. The reversal of 86906071009 is 90017060968.

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 33474361600 + 53431709409 = 182960^2 + 231153^2 .

It is a cyclic number.

It is not a de Polignac number, because 86906071009 - 2¹¹ = 86906068961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86906071009.

It is not an unprimeable number, because it can be changed into a prime (86906071099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509284 + ... + 658165.

It is an arithmetic number, because the mean of its divisors is an integer number (21726828225).

Almost surely, 2^86906071009 is an apocalyptic number.

It is an amenable number.

86906071009 is a deficient number, since it is larger than the sum of its proper divisors (1241891).

86906071009 is a wasteful number, since it uses less digits than its factorization.

86906071009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241890.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 86906071009 in words is "eighty-six billion, nine hundred six million, seventy-one thousand, nine".