6130781 has 2 divisors, whose sum is σ = 6130782. Its totient is φ = 6130780.

The previous prime is 6130769. The next prime is 6130783. The reversal of 6130781 is 1870316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6046681 + 84100 = 2459^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 6130781 - 2⁶ = 6130717 is a prime.

It is a super-2 number, since 2×6130781² = 75172951339922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 6130783, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6130781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6130783) 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, 3065390 + 3065391.

It is an arithmetic number, because the mean of its divisors is an integer number (3065391).

Almost surely, 2^6130781 is an apocalyptic number.

It is an amenable number.

6130781 is a deficient number, since it is larger than the sum of its proper divisors (1).

6130781 is an equidigital number, since it uses as much as digits as its factorization.

6130781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 6130781 is about 2476.0413970691. The cubic root of 6130781 is about 183.0228305198.

The spelling of 6130781 in words is "six million, one hundred thirty thousand, seven hundred eighty-one".