4062781 has 2 divisors, whose sum is σ = 4062782. Its totient is φ = 4062780.

The previous prime is 4062749. The next prime is 4062787. The reversal of 4062781 is 1872604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3367225 + 695556 = 1835^2 + 834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4062781 - 2⁵ = 4062749 is a prime.

It is a super-2 number, since 2×4062781² = 33012378907922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4062787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2031390 + 2031391.

It is an arithmetic number, because the mean of its divisors is an integer number (2031391).

Almost surely, 2^4062781 is an apocalyptic number.

It is an amenable number.

4062781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4062781 is an equidigital number, since it uses as much as digits as its factorization.

4062781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 4062781 is about 2015.6341433901. The cubic root of 4062781 is about 159.5662863276.

The spelling of 4062781 in words is "four million, sixty-two thousand, seven hundred eighty-one".