3468781 has 2 divisors, whose sum is σ = 3468782. Its totient is φ = 3468780.

The previous prime is 3468779. The next prime is 3468821. The reversal of 3468781 is 1878643.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 1522756 = 1395^2 + 1234^2 .

It is a cyclic number.

It is not a de Polignac number, because 3468781 - 2¹ = 3468779 is a prime.

It is a super-2 number, since 2×3468781² = 24064883251922, which contains 22 as substring.

Together with 3468779, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3468781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3468701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1734390 + 1734391.

It is an arithmetic number, because the mean of its divisors is an integer number (1734391).

Almost surely, 2^3468781 is an apocalyptic number.

It is an amenable number.

3468781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3468781 is an equidigital number, since it uses as much as digits as its factorization.

3468781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 3468781 is about 1862.4663755354. The cubic root of 3468781 is about 151.3766746080.

The spelling of 3468781 in words is "three million, four hundred sixty-eight thousand, seven hundred eighty-one".