8027662681 has 2 divisors, whose sum is σ = 8027662682. Its totient is φ = 8027662680.

The previous prime is 8027662663. The next prime is 8027662693. The reversal of 8027662681 is 1862667208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4451024656 + 3576638025 = 66716^2 + 59805^2 .

It is a cyclic number.

It is not a de Polignac number, because 8027662681 - 2¹⁷ = 8027531609 is a prime.

It is a super-2 number, since 2×8027662681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8027662631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4013831340 + 4013831341.

It is an arithmetic number, because the mean of its divisors is an integer number (4013831341).

Almost surely, 2^8027662681 is an apocalyptic number.

It is an amenable number.

8027662681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8027662681 is an equidigital number, since it uses as much as digits as its factorization.

8027662681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 8027662681 is about 89597.2247393858. The cubic root of 8027662681 is about 2002.3025714816.

The spelling of 8027662681 in words is "eight billion, twenty-seven million, six hundred sixty-two thousand, six hundred eighty-one".