6722879 has 2 divisors, whose sum is σ = 6722880. Its totient is φ = 6722878.

The previous prime is 6722869. The next prime is 6722899. The reversal of 6722879 is 9782276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6722879 - 2⁸ = 6722623 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 7⁵ + 2¹¹ + 2²¹ + 8⁷ + 7⁷ + 9⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6722819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3361439 + 3361440.

It is an arithmetic number, because the mean of its divisors is an integer number (3361440).

Almost surely, 2^6722879 is an apocalyptic number.

6722879 is a deficient number, since it is larger than the sum of its proper divisors (1).

6722879 is an equidigital number, since it uses as much as digits as its factorization.

6722879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 6722879 is about 2592.8515190809. The cubic root of 6722879 is about 188.7347042559.

The spelling of 6722879 in words is "six million, seven hundred twenty-two thousand, eight hundred seventy-nine".