768505853 has 2 divisors, whose sum is σ = 768505854. Its totient is φ = 768505852.

The previous prime is 768505819. The next prime is 768505889. The reversal of 768505853 is 358505867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582401689 + 186104164 = 24133^2 + 13642^2 .

It is a cyclic number.

It is not a de Polignac number, because 768505853 - 2¹⁶ = 768440317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 768505798 and 768505807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768505813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384252926 + 384252927.

It is an arithmetic number, because the mean of its divisors is an integer number (384252927).

Almost surely, 2^768505853 is an apocalyptic number.

It is an amenable number.

768505853 is a deficient number, since it is larger than the sum of its proper divisors (1).

768505853 is an equidigital number, since it uses as much as digits as its factorization.

768505853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The square root of 768505853 is about 27721.9381176714. The cubic root of 768505853 is about 915.9724114197.

The spelling of 768505853 in words is "seven hundred sixty-eight million, five hundred five thousand, eight hundred fifty-three".