824256863 has 2 divisors, whose sum is σ = 824256864. Its totient is φ = 824256862.

The previous prime is 824256793. The next prime is 824256869. The reversal of 824256863 is 368652428.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-824256863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (824256869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412128431 + 412128432.

It is an arithmetic number, because the mean of its divisors is an integer number (412128432).

Almost surely, 2^824256863 is an apocalyptic number.

824256863 is a deficient number, since it is larger than the sum of its proper divisors (1).

824256863 is an equidigital number, since it uses as much as digits as its factorization.

824256863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 44.

The square root of 824256863 is about 28709.8739634990. The cubic root of 824256863 is about 937.6070350800.

The spelling of 824256863 in words is "eight hundred twenty-four million, two hundred fifty-six thousand, eight hundred sixty-three".