766838843 has 2 divisors, whose sum is σ = 766838844. Its totient is φ = 766838842.

The previous prime is 766838713. The next prime is 766838857. The reversal of 766838843 is 348838667.

766838843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 766838843 - 2¹⁶ = 766773307 is a prime.

It is a super-2 number, since 2×766838843² = 1176083622267157298, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (766838893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383419421 + 383419422.

It is an arithmetic number, because the mean of its divisors is an integer number (383419422).

Almost surely, 2^766838843 is an apocalyptic number.

766838843 is a deficient number, since it is larger than the sum of its proper divisors (1).

766838843 is an equidigital number, since it uses as much as digits as its factorization.

766838843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 53.

The square root of 766838843 is about 27691.8551744010. The cubic root of 766838843 is about 915.3096359183.

The spelling of 766838843 in words is "seven hundred sixty-six million, eight hundred thirty-eight thousand, eight hundred forty-three".