3427694681 has 2 divisors, whose sum is σ = 3427694682. Its totient is φ = 3427694680.

The previous prime is 3427694659. The next prime is 3427694687. The reversal of 3427694681 is 1864967243.

3427694681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3417454681 + 10240000 = 58459^2 + 3200^2 .

It is an emirp because it is prime and its reverse (1864967243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3427694681 - 2¹⁸ = 3427432537 is a prime.

It is a super-2 number, since 2×3427694681² = 23498181652311383522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3427694687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1713847340 + 1713847341.

It is an arithmetic number, because the mean of its divisors is an integer number (1713847341).

Almost surely, 2^3427694681 is an apocalyptic number.

It is an amenable number.

3427694681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3427694681 is an equidigital number, since it uses as much as digits as its factorization.

3427694681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 3427694681 is about 58546.5172405669. The cubic root of 3427694681 is about 1507.7663393253.

The spelling of 3427694681 in words is "three billion, four hundred twenty-seven million, six hundred ninety-four thousand, six hundred eighty-one".