768635863 has 2 divisors, whose sum is σ = 768635864. Its totient is φ = 768635862.

The previous prime is 768635851. The next prime is 768635869. The reversal of 768635863 is 368536867.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 768635863 - 2¹⁷ = 768504791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 768635863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768635869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384317931 + 384317932.

It is an arithmetic number, because the mean of its divisors is an integer number (384317932).

Almost surely, 2^768635863 is an apocalyptic number.

768635863 is a deficient number, since it is larger than the sum of its proper divisors (1).

768635863 is an equidigital number, since it uses as much as digits as its factorization.

768635863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 52.

The square root of 768635863 is about 27724.2829122775. The cubic root of 768635863 is about 916.0240609324.

The spelling of 768635863 in words is "seven hundred sixty-eight million, six hundred thirty-five thousand, eight hundred sixty-three".