6918761 has 2 divisors, whose sum is σ = 6918762. Its totient is φ = 6918760.

The previous prime is 6918749. The next prime is 6918763. The reversal of 6918761 is 1678196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 3308761 = 1900^2 + 1819^2 .

It is a cyclic number.

It is not a de Polignac number, because 6918761 - 2¹⁰ = 6917737 is a prime.

It is a super-4 number, since 4×6918761⁴ (a number of 28 digits) contains 4444 as substring.

Together with 6918763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6918763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3459380 + 3459381.

It is an arithmetic number, because the mean of its divisors is an integer number (3459381).

Almost surely, 2^6918761 is an apocalyptic number.

It is an amenable number.

6918761 is a deficient number, since it is larger than the sum of its proper divisors (1).

6918761 is an equidigital number, since it uses as much as digits as its factorization.

6918761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 6918761 is about 2630.3537784868. The cubic root of 6918761 is about 190.5502148999.

The spelling of 6918761 in words is "six million, nine hundred eighteen thousand, seven hundred sixty-one".