6658722319 has 2 divisors, whose sum is σ = 6658722320. Its totient is φ = 6658722318.

The previous prime is 6658722253. The next prime is 6658722331. The reversal of 6658722319 is 9132278566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6658722319 - 2⁹ = 6658721807 is a prime.

It is a super-2 number, since 2×6658722319² = 88677165843097475522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6658722419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3329361159 + 3329361160.

It is an arithmetic number, because the mean of its divisors is an integer number (3329361160).

Almost surely, 2^6658722319 is an apocalyptic number.

6658722319 is a deficient number, since it is larger than the sum of its proper divisors (1).

6658722319 is an equidigital number, since it uses as much as digits as its factorization.

6658722319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 6658722319 is about 81600.9945956543. The cubic root of 6658722319 is about 1881.3241688708.

The spelling of 6658722319 in words is "six billion, six hundred fifty-eight million, seven hundred twenty-two thousand, three hundred nineteen".