64449563 has 2 divisors, whose sum is σ = 64449564. Its totient is φ = 64449562.

The previous prime is 64449557. The next prime is 64449569. The reversal of 64449563 is 36594446.

It is a balanced prime because it is at equal distance from previous prime (64449557) and next prime (64449569).

It is a cyclic number.

It is not a de Polignac number, because 64449563 - 2²⁴ = 47672347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64449563.

It is not a weakly prime, because it can be changed into another prime (64449569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32224781 + 32224782.

It is an arithmetic number, because the mean of its divisors is an integer number (32224782).

Almost surely, 2^64449563 is an apocalyptic number.

64449563 is a deficient number, since it is larger than the sum of its proper divisors (1).

64449563 is an equidigital number, since it uses as much as digits as its factorization.

64449563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The square root of 64449563 is about 8028.0485175415. The cubic root of 64449563 is about 400.9344051014.

The spelling of 64449563 in words is "sixty-four million, four hundred forty-nine thousand, five hundred sixty-three".