2067712681 has 2 divisors, whose sum is σ = 2067712682. Its totient is φ = 2067712680.

The previous prime is 2067712637. The next prime is 2067712721. The reversal of 2067712681 is 1862177602.

It is an a-pointer prime, because the next prime (2067712721) can be obtained adding 2067712681 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1928000281 + 139712400 = 43909^2 + 11820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2067712681 - 2¹³ = 2067704489 is a prime.

It is a super-2 number, since 2×2067712681² = 8550871462336415522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2067715681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033856340 + 1033856341.

It is an arithmetic number, because the mean of its divisors is an integer number (1033856341).

Almost surely, 2^2067712681 is an apocalyptic number.

It is an amenable number.

2067712681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2067712681 is an equidigital number, since it uses as much as digits as its factorization.

2067712681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2067712681 is about 45472.1088250809. The cubic root of 2067712681 is about 1273.9823084488.

The spelling of 2067712681 in words is "two billion, sixty-seven million, seven hundred twelve thousand, six hundred eighty-one".