63636673 has 2 divisors, whose sum is σ = 63636674. Its totient is φ = 63636672.

The previous prime is 63636659. The next prime is 63636679. The reversal of 63636673 is 37663636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53758224 + 9878449 = 7332^2 + 3143^2 .

It is a cyclic number.

It is not a de Polignac number, because 63636673 - 2²¹ = 61539521 is a prime.

It is not a weakly prime, because it can be changed into another prime (63636679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31818336 + 31818337.

It is an arithmetic number, because the mean of its divisors is an integer number (31818337).

Almost surely, 2^63636673 is an apocalyptic number.

It is an amenable number.

63636673 is a deficient number, since it is larger than the sum of its proper divisors (1).

63636673 is an equidigital number, since it uses as much as digits as its factorization.

63636673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 40.

The square root of 63636673 is about 7977.2597425432. The cubic root of 63636673 is about 399.2416318530.

The spelling of 63636673 in words is "sixty-three million, six hundred thirty-six thousand, six hundred seventy-three".