63643453 has 2 divisors, whose sum is σ = 63643454. Its totient is φ = 63643452.

The previous prime is 63643423. The next prime is 63643469. The reversal of 63643453 is 35434636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47858724 + 15784729 = 6918^2 + 3973^2 .

It is a cyclic number.

It is not a de Polignac number, because 63643453 - 2⁵ = 63643421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63643423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31821726 + 31821727.

It is an arithmetic number, because the mean of its divisors is an integer number (31821727).

Almost surely, 2^63643453 is an apocalyptic number.

It is an amenable number.

63643453 is a deficient number, since it is larger than the sum of its proper divisors (1).

63643453 is an equidigital number, since it uses as much as digits as its factorization.

63643453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 34.

The square root of 63643453 is about 7977.6846891814. The cubic root of 63643453 is about 399.2558100620.

The spelling of 63643453 in words is "sixty-three million, six hundred forty-three thousand, four hundred fifty-three".