8422712681 has 2 divisors, whose sum is σ = 8422712682. Its totient is φ = 8422712680.

The previous prime is 8422712663. The next prime is 8422712689. The reversal of 8422712681 is 1862172248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6936224656 + 1486488025 = 83284^2 + 38555^2 .

It is a cyclic number.

It is not a de Polignac number, because 8422712681 - 2²² = 8418518377 is a prime.

It is a super-2 number, since 2×8422712681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8422712689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211356340 + 4211356341.

It is an arithmetic number, because the mean of its divisors is an integer number (4211356341).

Almost surely, 2^8422712681 is an apocalyptic number.

It is an amenable number.

8422712681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8422712681 is an equidigital number, since it uses as much as digits as its factorization.

8422712681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 41.

The square root of 8422712681 is about 91775.3380870918. The cubic root of 8422712681 is about 2034.6232144951.

The spelling of 8422712681 in words is "eight billion, four hundred twenty-two million, seven hundred twelve thousand, six hundred eighty-one".