63619841 has 2 divisors, whose sum is σ = 63619842. Its totient is φ = 63619840.

The previous prime is 63619837. The next prime is 63619849. The reversal of 63619841 is 14891636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 14409616 = 7015^2 + 3796^2 .

It is a cyclic number.

It is not a de Polignac number, because 63619841 - 2² = 63619837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63619795 and 63619804.

It is not a weakly prime, because it can be changed into another prime (63619849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31809920 + 31809921.

It is an arithmetic number, because the mean of its divisors is an integer number (31809921).

Almost surely, 2^63619841 is an apocalyptic number.

It is an amenable number.

63619841 is a deficient number, since it is larger than the sum of its proper divisors (1).

63619841 is an equidigital number, since it uses as much as digits as its factorization.

63619841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 63619841 is about 7976.2046739035. The cubic root of 63619841 is about 399.2064287361.

The spelling of 63619841 in words is "sixty-three million, six hundred nineteen thousand, eight hundred forty-one".