63320513 has 2 divisors, whose sum is σ = 63320514. Its totient is φ = 63320512.

The previous prime is 63320479. The next prime is 63320519. The reversal of 63320513 is 31502336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56731024 + 6589489 = 7532^2 + 2567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63320513 is a prime.

It is not a weakly prime, because it can be changed into another prime (63320519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31660256 + 31660257.

It is an arithmetic number, because the mean of its divisors is an integer number (31660257).

Almost surely, 2^63320513 is an apocalyptic number.

It is an amenable number.

63320513 is a deficient number, since it is larger than the sum of its proper divisors (1).

63320513 is an equidigital number, since it uses as much as digits as its factorization.

63320513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 63320513 is about 7957.4187397673. The cubic root of 63320513 is about 398.5793625295.

Adding to 63320513 its reverse (31502336), we get a palindrome (94822849).

The spelling of 63320513 in words is "sixty-three million, three hundred twenty thousand, five hundred thirteen".