63756013 has 2 divisors, whose sum is σ = 63756014. Its totient is φ = 63756012.

The previous prime is 63755987. The next prime is 63756029. The reversal of 63756013 is 31065736.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34140649 + 29615364 = 5843^2 + 5442^2 .

It is a cyclic number.

It is not a de Polignac number, because 63756013 - 2⁹ = 63755501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63756053) 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, 31878006 + 31878007.

It is an arithmetic number, because the mean of its divisors is an integer number (31878007).

Almost surely, 2^63756013 is an apocalyptic number.

It is an amenable number.

63756013 is a deficient number, since it is larger than the sum of its proper divisors (1).

63756013 is an equidigital number, since it uses as much as digits as its factorization.

63756013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 63756013 is about 7984.7362511231. The cubic root of 63756013 is about 399.4910464403.

The spelling of 63756013 in words is "sixty-three million, seven hundred fifty-six thousand, thirteen".