6978047 has 2 divisors, whose sum is σ = 6978048. Its totient is φ = 6978046.

The previous prime is 6978031. The next prime is 6978061. The reversal of 6978047 is 7408796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6978047 - 2⁴ = 6978031 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6977995 and 6978013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6978247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3489023 + 3489024.

It is an arithmetic number, because the mean of its divisors is an integer number (3489024).

Almost surely, 2^6978047 is an apocalyptic number.

6978047 is a deficient number, since it is larger than the sum of its proper divisors (1).

6978047 is an equidigital number, since it uses as much as digits as its factorization.

6978047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 6978047 is about 2641.5993261659. The cubic root of 6978047 is about 191.0929346809.

The spelling of 6978047 in words is "six million, nine hundred seventy-eight thousand, forty-seven".