6722665049 has 2 divisors, whose sum is σ = 6722665050. Its totient is φ = 6722665048.

The previous prime is 6722665039. The next prime is 6722665067. The reversal of 6722665049 is 9405662276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3951379600 + 2771285449 = 62860^2 + 52643^2 .

It is a cyclic number.

It is not a de Polignac number, because 6722665049 - 2¹² = 6722660953 is a prime.

It is a super-3 number, since 3×6722665049³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 6722664994 and 6722665012.

It is not a weakly prime, because it can be changed into another prime (6722665039) 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, 3361332524 + 3361332525.

It is an arithmetic number, because the mean of its divisors is an integer number (3361332525).

Almost surely, 2^6722665049 is an apocalyptic number.

It is an amenable number.

6722665049 is a deficient number, since it is larger than the sum of its proper divisors (1).

6722665049 is an equidigital number, since it uses as much as digits as its factorization.

6722665049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 6722665049 is about 81991.8596508214. The cubic root of 6722665049 is about 1887.3270211726.

The spelling of 6722665049 in words is "six billion, seven hundred twenty-two million, six hundred sixty-five thousand, forty-nine".