63842213 has 2 divisors, whose sum is σ = 63842214. Its totient is φ = 63842212.

The previous prime is 63842209. The next prime is 63842239. The reversal of 63842213 is 31224836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 6340324 = 7583^2 + 2518^2 .

It is a cyclic number.

It is not a de Polignac number, because 63842213 - 2² = 63842209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63842203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31921106 + 31921107.

It is an arithmetic number, because the mean of its divisors is an integer number (31921107).

Almost surely, 2^63842213 is an apocalyptic number.

It is an amenable number.

63842213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63842213 is an equidigital number, since it uses as much as digits as its factorization.

63842213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 63842213 is about 7990.1322266906. The cubic root of 63842213 is about 399.6710065658.

The spelling of 63842213 in words is "sixty-three million, eight hundred forty-two thousand, two hundred thirteen".