6847157 has 2 divisors, whose sum is σ = 6847158. Its totient is φ = 6847156.

The previous prime is 6847153. The next prime is 6847213. The reversal of 6847157 is 7517486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6832996 + 14161 = 2614^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 6847157 - 2² = 6847153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6847157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6847153) 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, 3423578 + 3423579.

It is an arithmetic number, because the mean of its divisors is an integer number (3423579).

Almost surely, 2^6847157 is an apocalyptic number.

It is an amenable number.

6847157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6847157 is an equidigital number, since it uses as much as digits as its factorization.

6847157 is an odious number, because the sum of its binary digits is odd.

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

The square root of 6847157 is about 2616.7072820627. The cubic root of 6847157 is about 189.8905833543.

The spelling of 6847157 in words is "six million, eight hundred forty-seven thousand, one hundred fifty-seven".