8512064681 has 4 divisors (see below), whose sum is σ = 8519153364. Its totient is φ = 8504976000.

The previous prime is 8512064651. The next prime is 8512064731. The reversal of 8512064681 is 1864602158.

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 4081165456 + 4430899225 = 63884^2 + 66565^2 .

It is a cyclic number.

It is not a de Polignac number, because 8512064681 - 2¹⁰ = 8512063657 is a prime.

It is a super-2 number, since 2×8512064681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8512064651) 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, 3542540 + ... + 3544941.

It is an arithmetic number, because the mean of its divisors is an integer number (2129788341).

Almost surely, 2^8512064681 is an apocalyptic number.

It is an amenable number.

8512064681 is a deficient number, since it is larger than the sum of its proper divisors (7088683).

8512064681 is a wasteful number, since it uses less digits than its factorization.

8512064681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7088682.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 8512064681 is about 92260.8512913251. The cubic root of 8512064681 is about 2041.7926605002.

The spelling of 8512064681 in words is "eight billion, five hundred twelve million, sixty-four thousand, six hundred eighty-one".