6878900069 has 2 divisors, whose sum is σ = 6878900070. Its totient is φ = 6878900068.

The previous prime is 6878900059. The next prime is 6878900071. The reversal of 6878900069 is 9600098786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6169317025 + 709583044 = 78545^2 + 26638^2 .

It is a cyclic number.

It is not a de Polignac number, because 6878900069 - 2¹⁶ = 6878834533 is a prime.

It is a super-2 number, since 2×6878900069² = 94638532318576409522, which contains 22 as substring.

Together with 6878900071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6878900059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439450034 + 3439450035.

It is an arithmetic number, because the mean of its divisors is an integer number (3439450035).

Almost surely, 2^6878900069 is an apocalyptic number.

It is an amenable number.

6878900069 is a deficient number, since it is larger than the sum of its proper divisors (1).

6878900069 is an equidigital number, since it uses as much as digits as its factorization.

6878900069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 6878900069 is about 82939.1347254117. The cubic root of 6878900069 is about 1901.8357206420.

The spelling of 6878900069 in words is "six billion, eight hundred seventy-eight million, nine hundred thousand, sixty-nine".