63223609 has 2 divisors, whose sum is σ = 63223610. Its totient is φ = 63223608.

The previous prime is 63223607. The next prime is 63223649. The reversal of 63223609 is 90632236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61277584 + 1946025 = 7828^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 63223609 - 2¹ = 63223607 is a prime.

Together with 63223607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63223603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31611804 + 31611805.

It is an arithmetic number, because the mean of its divisors is an integer number (31611805).

Almost surely, 2^63223609 is an apocalyptic number.

It is an amenable number.

63223609 is a deficient number, since it is larger than the sum of its proper divisors (1).

63223609 is an equidigital number, since it uses as much as digits as its factorization.

63223609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 63223609 is about 7951.3274992293. The cubic root of 63223609 is about 398.3759336958.

The spelling of 63223609 in words is "sixty-three million, two hundred twenty-three thousand, six hundred nine".