63626161 has 2 divisors, whose sum is σ = 63626162. Its totient is φ = 63626160.

The previous prime is 63626107. The next prime is 63626177. The reversal of 63626161 is 16162636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32890225 + 30735936 = 5735^2 + 5544^2 .

It is a cyclic number.

It is not a de Polignac number, because 63626161 - 2⁷ = 63626033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63626191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31813080 + 31813081.

It is an arithmetic number, because the mean of its divisors is an integer number (31813081).

Almost surely, 2^63626161 is an apocalyptic number.

It is an amenable number.

63626161 is a deficient number, since it is larger than the sum of its proper divisors (1).

63626161 is an equidigital number, since it uses as much as digits as its factorization.

63626161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 63626161 is about 7976.6008424642. The cubic root of 63626161 is about 399.2196473644.

Adding to 63626161 its reverse (16162636), we get a palindrome (79788797).

The spelling of 63626161 in words is "sixty-three million, six hundred twenty-six thousand, one hundred sixty-one".