248646847 has 2 divisors, whose sum is σ = 248646848. Its totient is φ = 248646846.

The previous prime is 248646817. The next prime is 248646929. The reversal of 248646847 is 748646842.

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-248646847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248646847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248646817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124323423 + 124323424.

It is an arithmetic number, because the mean of its divisors is an integer number (124323424).

Almost surely, 2^248646847 is an apocalyptic number.

248646847 is a deficient number, since it is larger than the sum of its proper divisors (1).

248646847 is an equidigital number, since it uses as much as digits as its factorization.

248646847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 49.

The square root of 248646847 is about 15768.5397865497. The cubic root of 248646847 is about 628.8218908426.

The spelling of 248646847 in words is "two hundred forty-eight million, six hundred forty-six thousand, eight hundred forty-seven".