63995213 has 2 divisors, whose sum is σ = 63995214. Its totient is φ = 63995212.

The previous prime is 63995179. The next prime is 63995227. The reversal of 63995213 is 31259936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56580484 + 7414729 = 7522^2 + 2723^2 .

It is a cyclic number.

It is not a de Polignac number, because 63995213 - 2⁶ = 63995149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63995233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31997606 + 31997607.

It is an arithmetic number, because the mean of its divisors is an integer number (31997607).

Almost surely, 2^63995213 is an apocalyptic number.

It is an amenable number.

63995213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63995213 is an equidigital number, since it uses as much as digits as its factorization.

63995213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 38.

The square root of 63995213 is about 7999.7008069052. The cubic root of 63995213 is about 399.9900268347.

The spelling of 63995213 in words is "sixty-three million, nine hundred ninety-five thousand, two hundred thirteen".