71248847 has 2 divisors, whose sum is σ = 71248848. Its totient is φ = 71248846.

The previous prime is 71248799. The next prime is 71248883. The reversal of 71248847 is 74884217.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71248847 - 2⁸ = 71248591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71248747) 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, 35624423 + 35624424.

It is an arithmetic number, because the mean of its divisors is an integer number (35624424).

Almost surely, 2^71248847 is an apocalyptic number.

71248847 is a deficient number, since it is larger than the sum of its proper divisors (1).

71248847 is an equidigital number, since it uses as much as digits as its factorization.

71248847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 41.

The square root of 71248847 is about 8440.9032099652. The cubic root of 71248847 is about 414.5649808418.

The spelling of 71248847 in words is "seventy-one million, two hundred forty-eight thousand, eight hundred forty-seven".