7856741 has 2 divisors, whose sum is σ = 7856742. Its totient is φ = 7856740.

The previous prime is 7856713. The next prime is 7856743. The reversal of 7856741 is 1476587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7134241 + 722500 = 2671^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 7856741 - 2²² = 3662437 is a prime.

It is a Sophie Germain prime.

Together with 7856743, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7856695 and 7856704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7856743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3928370 + 3928371.

It is an arithmetic number, because the mean of its divisors is an integer number (3928371).

Almost surely, 2^7856741 is an apocalyptic number.

It is an amenable number.

7856741 is a deficient number, since it is larger than the sum of its proper divisors (1).

7856741 is an equidigital number, since it uses as much as digits as its factorization.

7856741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 7856741 is about 2802.9878701129. The cubic root of 7856741 is about 198.7989771575.

The spelling of 7856741 in words is "seven million, eight hundred fifty-six thousand, seven hundred forty-one".