63924013 has 2 divisors, whose sum is σ = 63924014. Its totient is φ = 63924012.

The previous prime is 63923971. The next prime is 63924017. The reversal of 63924013 is 31042936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34363044 + 29560969 = 5862^2 + 5437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63924013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63924017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31962006 + 31962007.

It is an arithmetic number, because the mean of its divisors is an integer number (31962007).

Almost surely, 2^63924013 is an apocalyptic number.

It is an amenable number.

63924013 is a deficient number, since it is larger than the sum of its proper divisors (1).

63924013 is an equidigital number, since it uses as much as digits as its factorization.

63924013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 63924013 is about 7995.2494019887. The cubic root of 63924013 is about 399.8416310565.

Adding to 63924013 its reverse (31042936), we get a palindrome (94966949).

The spelling of 63924013 in words is "sixty-three million, nine hundred twenty-four thousand, thirteen".