683865869 has 2 divisors, whose sum is σ = 683865870. Its totient is φ = 683865868.

The previous prime is 683865829. The next prime is 683865881. The reversal of 683865869 is 968568386.

683865869 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 can be written as a sum of positive squares in only one way, i.e., 682515625 + 1350244 = 26125^2 + 1162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683865869 is a prime.

It is a super-2 number, since 2×683865869² = 935345053566250322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683865829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341932934 + 341932935.

It is an arithmetic number, because the mean of its divisors is an integer number (341932935).

Almost surely, 2^683865869 is an apocalyptic number.

It is an amenable number.

683865869 is a deficient number, since it is larger than the sum of its proper divisors (1).

683865869 is an equidigital number, since it uses as much as digits as its factorization.

683865869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 59.

The square root of 683865869 is about 26150.8292220342. The cubic root of 683865869 is about 881.0292146192.

The spelling of 683865869 in words is "six hundred eighty-three million, eight hundred sixty-five thousand, eight hundred sixty-nine".