63445373 has 2 divisors, whose sum is σ = 63445374. Its totient is φ = 63445372.

The previous prime is 63445357. The next prime is 63445391. The reversal of 63445373 is 37354436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 2948089 = 7778^2 + 1717^2 .

It is a cyclic number.

It is not a de Polignac number, because 63445373 - 2⁴ = 63445357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63445073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31722686 + 31722687.

It is an arithmetic number, because the mean of its divisors is an integer number (31722687).

Almost surely, 2^63445373 is an apocalyptic number.

It is an amenable number.

63445373 is a deficient number, since it is larger than the sum of its proper divisors (1).

63445373 is an equidigital number, since it uses as much as digits as its factorization.

63445373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 35.

The square root of 63445373 is about 7965.2603849466. The cubic root of 63445373 is about 398.8411731260.

The spelling of 63445373 in words is "sixty-three million, four hundred forty-five thousand, three hundred seventy-three".