6623472209 has 2 divisors, whose sum is σ = 6623472210. Its totient is φ = 6623472208.

The previous prime is 6623472203. The next prime is 6623472241. The reversal of 6623472209 is 9022743266.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4011955600 + 2611516609 = 63340^2 + 51103^2 .

It is a cyclic number.

It is not a de Polignac number, because 6623472209 - 2¹² = 6623468113 is a prime.

It is not a weakly prime, because it can be changed into another prime (6623472203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311736104 + 3311736105.

It is an arithmetic number, because the mean of its divisors is an integer number (3311736105).

Almost surely, 2^6623472209 is an apocalyptic number.

It is an amenable number.

6623472209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6623472209 is an equidigital number, since it uses as much as digits as its factorization.

6623472209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 6623472209 is about 81384.7172938507. The cubic root of 6623472209 is about 1877.9984931918.

The spelling of 6623472209 in words is "six billion, six hundred twenty-three million, four hundred seventy-two thousand, two hundred nine".