5642947 has 2 divisors, whose sum is σ = 5642948. Its totient is φ = 5642946.

The previous prime is 5642911. The next prime is 5642969. The reversal of 5642947 is 7492465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5642947 is a prime.

It is not a weakly prime, because it can be changed into another prime (5642977) 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, 2821473 + 2821474.

It is an arithmetic number, because the mean of its divisors is an integer number (2821474).

Almost surely, 2^5642947 is an apocalyptic number.

5642947 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642947 is an equidigital number, since it uses as much as digits as its factorization.

5642947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 5642947 is about 2375.4887918069. The cubic root of 5642947 is about 178.0336068347.

The spelling of 5642947 in words is "five million, six hundred forty-two thousand, nine hundred forty-seven".