5678947 has 2 divisors, whose sum is σ = 5678948. Its totient is φ = 5678946.

The previous prime is 5678941. The next prime is 5678957. The reversal of 5678947 is 7498765.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5678947 is a prime.

It is a Chen prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 5678897 and 5678906.

It is not a weakly prime, because it can be changed into another prime (5678941) 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, 2839473 + 2839474.

It is an arithmetic number, because the mean of its divisors is an integer number (2839474).

Almost surely, 2^5678947 is an apocalyptic number.

5678947 is a deficient number, since it is larger than the sum of its proper divisors (1).

5678947 is an equidigital number, since it uses as much as digits as its factorization.

5678947 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5678947 is about 2383.0541328304. The cubic root of 5678947 is about 178.4114016556.

It can be divided in two parts, 56 and 78947, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 5678947 in words is "five million, six hundred seventy-eight thousand, nine hundred forty-seven".