6662240447 has 2 divisors, whose sum is σ = 6662240448. Its totient is φ = 6662240446.

The previous prime is 6662240443. The next prime is 6662240471. The reversal of 6662240447 is 7440422666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6662240447 - 2² = 6662240443 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6662240443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331120223 + 3331120224.

It is an arithmetic number, because the mean of its divisors is an integer number (3331120224).

Almost surely, 2^6662240447 is an apocalyptic number.

6662240447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662240447 is an equidigital number, since it uses as much as digits as its factorization.

6662240447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 41.

The square root of 6662240447 is about 81622.5486431292. The cubic root of 6662240447 is about 1881.6554423291.

The spelling of 6662240447 in words is "six billion, six hundred sixty-two million, two hundred forty thousand, four hundred forty-seven".