3427813 has 2 divisors, whose sum is σ = 3427814. Its totient is φ = 3427812.

The previous prime is 3427811. The next prime is 3427819. The reversal of 3427813 is 3187243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2683044 + 744769 = 1638^2 + 863^2 .

It is an emirp because it is prime and its reverse (3187243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3427813 - 2¹ = 3427811 is a prime.

Together with 3427811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3427811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1713906 + 1713907.

It is an arithmetic number, because the mean of its divisors is an integer number (1713907).

Almost surely, 2^3427813 is an apocalyptic number.

It is an amenable number.

3427813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3427813 is an equidigital number, since it uses as much as digits as its factorization.

3427813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 3427813 is about 1851.4353890968. The cubic root of 3427813 is about 150.7783687754.

The spelling of 3427813 in words is "three million, four hundred twenty-seven thousand, eight hundred thirteen".