768055889 has 2 divisors, whose sum is σ = 768055890. Its totient is φ = 768055888.

The previous prime is 768055861. The next prime is 768055927. The reversal of 768055889 is 988550867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 741636289 + 26419600 = 27233^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 768055889 - 2²⁰ = 767007313 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (768055289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384027944 + 384027945.

It is an arithmetic number, because the mean of its divisors is an integer number (384027945).

Almost surely, 2^768055889 is an apocalyptic number.

It is an amenable number.

768055889 is a deficient number, since it is larger than the sum of its proper divisors (1).

768055889 is an equidigital number, since it uses as much as digits as its factorization.

768055889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 56.

The square root of 768055889 is about 27713.8212630449. The cubic root of 768055889 is about 915.7936077171.

The spelling of 768055889 in words is "seven hundred sixty-eight million, fifty-five thousand, eight hundred eighty-nine".