6876220409 has 2 divisors, whose sum is σ = 6876220410. Its totient is φ = 6876220408.

The previous prime is 6876220357. The next prime is 6876220411. The reversal of 6876220409 is 9040226786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5632952809 + 1243267600 = 75053^2 + 35260^2 .

It is a cyclic number.

It is not a de Polignac number, because 6876220409 - 2²⁰ = 6875171833 is a prime.

It is a super-2 number, since 2×6876220409² = 94564814226296254562, which contains 22 as substring.

Together with 6876220411, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6876220409.

It is not a weakly prime, because it can be changed into another prime (6876240409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3438110204 + 3438110205.

It is an arithmetic number, because the mean of its divisors is an integer number (3438110205).

Almost surely, 2^6876220409 is an apocalyptic number.

It is an amenable number.

6876220409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6876220409 is an equidigital number, since it uses as much as digits as its factorization.

6876220409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 6876220409 is about 82922.9787754878. The cubic root of 6876220409 is about 1901.5887366307.

The spelling of 6876220409 in words is "six billion, eight hundred seventy-six million, two hundred twenty thousand, four hundred nine".