6947857 has 6 divisors (see below), whose sum is σ = 8082258. Its totient is φ = 5955264.

The previous prime is 6947851. The next prime is 6947861. The reversal of 6947857 is 7587496.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5564881 + 1382976 = 2359^2 + 1176^2 .

It is not a de Polignac number, because 6947857 - 2⁷ = 6947729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6947851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70848 + ... + 70945.

It is an arithmetic number, because the mean of its divisors is an integer number (1347043).

Almost surely, 2^6947857 is an apocalyptic number.

It is an amenable number.

6947857 is a deficient number, since it is larger than the sum of its proper divisors (1134401).

6947857 is a wasteful number, since it uses less digits than its factorization.

6947857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141807 (or 141800 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The square root of 6947857 is about 2635.8787908400. The cubic root of 6947857 is about 190.8169531822.

The spelling of 6947857 in words is "six million, nine hundred forty-seven thousand, eight hundred fifty-seven".