63788513 has 2 divisors, whose sum is σ = 63788514. Its totient is φ = 63788512.

The previous prime is 63788509. The next prime is 63788531. The reversal of 63788513 is 31588736.

63788513 = 5647² + 5648².

Together with next prime (63788531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31899904 + 31888609 = 5648^2 + 5647^2 .

It is a cyclic number.

It is not a de Polignac number, because 63788513 - 2² = 63788509 is a prime.

It is not a weakly prime, because it can be changed into another prime (63788503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31894256 + 31894257.

It is an arithmetic number, because the mean of its divisors is an integer number (31894257).

Almost surely, 2^63788513 is an apocalyptic number.

63788513 is the 5648-th centered square number.

It is an amenable number.

63788513 is a deficient number, since it is larger than the sum of its proper divisors (1).

63788513 is an equidigital number, since it uses as much as digits as its factorization.

63788513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 63788513 is about 7986.7711248038. The cubic root of 63788513 is about 399.5589158741.

The spelling of 63788513 in words is "sixty-three million, seven hundred eighty-eight thousand, five hundred thirteen".