63603313 has 2 divisors, whose sum is σ = 63603314. Its totient is φ = 63603312.

The previous prime is 63603283. The next prime is 63603329. The reversal of 63603313 is 31330636.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50808384 + 12794929 = 7128^2 + 3577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63603313 is a prime.

It is not a weakly prime, because it can be changed into another prime (63603383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31801656 + 31801657.

It is an arithmetic number, because the mean of its divisors is an integer number (31801657).

Almost surely, 2^63603313 is an apocalyptic number.

It is an amenable number.

63603313 is a deficient number, since it is larger than the sum of its proper divisors (1).

63603313 is an equidigital number, since it uses as much as digits as its factorization.

63603313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 25.

The square root of 63603313 is about 7975.1685248652. The cubic root of 63603313 is about 399.1718553745.

Adding to 63603313 its reverse (31330636), we get a palindrome (94933949).

The spelling of 63603313 in words is "sixty-three million, six hundred three thousand, three hundred thirteen".