3345781 has 2 divisors, whose sum is σ = 3345782. Its totient is φ = 3345780.

The previous prime is 3345763. The next prime is 3345829. The reversal of 3345781 is 1875433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2588881 + 756900 = 1609^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 3345781 - 2¹¹ = 3343733 is a prime.

It is a super-2 number, since 2×3345781² = 22388500999922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3345721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672890 + 1672891.

It is an arithmetic number, because the mean of its divisors is an integer number (1672891).

Almost surely, 2^3345781 is an apocalyptic number.

It is an amenable number.

3345781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3345781 is an equidigital number, since it uses as much as digits as its factorization.

3345781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 3345781 is about 1829.1476156943. The cubic root of 3345781 is about 149.5658706830.

The spelling of 3345781 in words is "three million, three hundred forty-five thousand, seven hundred eighty-one".