6872422621 has 2 divisors, whose sum is σ = 6872422622. Its totient is φ = 6872422620.

The previous prime is 6872422541. The next prime is 6872422633. The reversal of 6872422621 is 1262242786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6854018521 + 18404100 = 82789^2 + 4290^2 .

It is a cyclic number.

It is not a de Polignac number, because 6872422621 - 2²³ = 6864034013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6872422681) 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, 3436211310 + 3436211311.

It is an arithmetic number, because the mean of its divisors is an integer number (3436211311).

Almost surely, 2^6872422621 is an apocalyptic number.

It is an amenable number.

6872422621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6872422621 is an equidigital number, since it uses as much as digits as its factorization.

6872422621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 40.

The square root of 6872422621 is about 82900.0761217986. The cubic root of 6872422621 is about 1901.2385849282.

The spelling of 6872422621 in words is "six billion, eight hundred seventy-two million, four hundred twenty-two thousand, six hundred twenty-one".