63106081 has 2 divisors, whose sum is σ = 63106082. Its totient is φ = 63106080.

The previous prime is 63106079. The next prime is 63106103. The reversal of 63106081 is 18060136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 11840481 = 7160^2 + 3441^2 .

It is a cyclic number.

It is not a de Polignac number, because 63106081 - 2¹ = 63106079 is a prime.

It is a super-2 number, since 2×63106081² = 7964754918357122, which contains 22 as substring.

Together with 63106079, it forms a pair of twin primes.

It is equal to p_3735214 and since 63106081 and 3735214 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (63106031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31553040 + 31553041.

It is an arithmetic number, because the mean of its divisors is an integer number (31553041).

Almost surely, 2^63106081 is an apocalyptic number.

It is an amenable number.

63106081 is a deficient number, since it is larger than the sum of its proper divisors (1).

63106081 is an equidigital number, since it uses as much as digits as its factorization.

63106081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 63106081 is about 7943.9335974063. The cubic root of 63106081 is about 398.1289301407.

The spelling of 63106081 in words is "sixty-three million, one hundred six thousand, eighty-one".