63911137 has 2 divisors, whose sum is σ = 63911138. Its totient is φ = 63911136.

The previous prime is 63911059. The next prime is 63911153. The reversal of 63911137 is 73111936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52070656 + 11840481 = 7216^2 + 3441^2 .

It is a cyclic number.

It is not a de Polignac number, because 63911137 - 2⁷ = 63911009 is a prime.

It is a Chen prime.

It is equal to p_3780139 and since 63911137 and 3780139 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 63911099 and 63911108.

It is not a weakly prime, because it can be changed into another prime (63951137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31955568 + 31955569.

It is an arithmetic number, because the mean of its divisors is an integer number (31955569).

Almost surely, 2^63911137 is an apocalyptic number.

It is an amenable number.

63911137 is a deficient number, since it is larger than the sum of its proper divisors (1).

63911137 is an equidigital number, since it uses as much as digits as its factorization.

63911137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 31.

The square root of 63911137 is about 7994.4441332716. Note that the first 3 decimals coincide. The cubic root of 63911137 is about 399.8147829999.

The spelling of 63911137 in words is "sixty-three million, nine hundred eleven thousand, one hundred thirty-seven".