8662320649 has 2 divisors, whose sum is σ = 8662320650. Its totient is φ = 8662320648.

The previous prime is 8662320617. The next prime is 8662320661. The reversal of 8662320649 is 9460232668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8618337225 + 43983424 = 92835^2 + 6632^2 .

It is a cyclic number.

It is not a de Polignac number, because 8662320649 - 2⁵ = 8662320617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8662320599 and 8662320608.

It is not a weakly prime, because it can be changed into another prime (8662320679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331160324 + 4331160325.

It is an arithmetic number, because the mean of its divisors is an integer number (4331160325).

Almost surely, 2^8662320649 is an apocalyptic number.

It is an amenable number.

8662320649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8662320649 is an equidigital number, since it uses as much as digits as its factorization.

8662320649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 8662320649 is about 93071.5888389147. The cubic root of 8662320649 is about 2053.7366430651.

The spelling of 8662320649 in words is "eight billion, six hundred sixty-two million, three hundred twenty thousand, six hundred forty-nine".