63975313 has 2 divisors, whose sum is σ = 63975314. Its totient is φ = 63975312.

The previous prime is 63975311. The next prime is 63975323. The reversal of 63975313 is 31357936.

It is a happy number.

63975313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63170704 + 804609 = 7948^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 63975313 - 2¹ = 63975311 is a prime.

Together with 63975311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63975311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31987656 + 31987657.

It is an arithmetic number, because the mean of its divisors is an integer number (31987657).

Almost surely, 2^63975313 is an apocalyptic number.

It is an amenable number.

63975313 is a deficient number, since it is larger than the sum of its proper divisors (1).

63975313 is an equidigital number, since it uses as much as digits as its factorization.

63975313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 37.

The square root of 63975313 is about 7998.4569136803. The cubic root of 63975313 is about 399.9485621356.

The spelling of 63975313 in words is "sixty-three million, nine hundred seventy-five thousand, three hundred thirteen".