5806781 has 2 divisors, whose sum is σ = 5806782. Its totient is φ = 5806780.

The previous prime is 5806771. The next prime is 5806807. The reversal of 5806781 is 1876085.

It is a happy number.

5806781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5736025 + 70756 = 2395^2 + 266^2 .

It is a cyclic number.

It is not a de Polignac number, because 5806781 - 2²² = 1612477 is a prime.

It is a super-2 number, since 2×5806781² = 67437411163922, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5806771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2903390 + 2903391.

It is an arithmetic number, because the mean of its divisors is an integer number (2903391).

Almost surely, 2^5806781 is an apocalyptic number.

It is an amenable number.

5806781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5806781 is an equidigital number, since it uses as much as digits as its factorization.

5806781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 5806781 is about 2409.7263330096. The cubic root of 5806781 is about 179.7401703845.

The spelling of 5806781 in words is "five million, eight hundred six thousand, seven hundred eighty-one".