256848863 has 2 divisors, whose sum is σ = 256848864. Its totient is φ = 256848862.

The previous prime is 256848841. The next prime is 256848871. The reversal of 256848863 is 368848652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256848863 - 2⁸ = 256848607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256848763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128424431 + 128424432.

It is an arithmetic number, because the mean of its divisors is an integer number (128424432).

Almost surely, 2^256848863 is an apocalyptic number.

256848863 is a deficient number, since it is larger than the sum of its proper divisors (1).

256848863 is an equidigital number, since it uses as much as digits as its factorization.

256848863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2211840, while the sum is 50.

The square root of 256848863 is about 16026.5050151304. The cubic root of 256848863 is about 635.6614621380.

The spelling of 256848863 in words is "two hundred fifty-six million, eight hundred forty-eight thousand, eight hundred sixty-three".