8636872705 has 8 divisors (see below), whose sum is σ = 10386928872. Its totient is φ = 6894377088.

The previous prime is 8636872679. The next prime is 8636872711. The reversal of 8636872705 is 5072786368.

8636872705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3693235984 + 4943636721 = 60772^2 + 70311^2 .

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 8636872705 - 2¹¹ = 8636870657 is a prime.

It is a super-3 number, since 3×8636872705³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian 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, 1887622 + ... + 1892191.

It is an arithmetic number, because the mean of its divisors is an integer number (1298366109).

Almost surely, 2^8636872705 is an apocalyptic number.

It is an amenable number.

8636872705 is a deficient number, since it is larger than the sum of its proper divisors (1750056167).

8636872705 is a wasteful number, since it uses less digits than its factorization.

8636872705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780275.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The square root of 8636872705 is about 92934.7766177979. The cubic root of 8636872705 is about 2051.7235320974.

The spelling of 8636872705 in words is "eight billion, six hundred thirty-six million, eight hundred seventy-two thousand, seven hundred five".