63981107 has 2 divisors, whose sum is σ = 63981108. Its totient is φ = 63981106.

The previous prime is 63981091. The next prime is 63981133. The reversal of 63981107 is 70118936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63981107 - 2⁴ = 63981091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63981007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31990553 + 31990554.

It is an arithmetic number, because the mean of its divisors is an integer number (31990554).

Almost surely, 2^63981107 is an apocalyptic number.

63981107 is a deficient number, since it is larger than the sum of its proper divisors (1).

63981107 is an equidigital number, since it uses as much as digits as its factorization.

63981107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 63981107 is about 7998.8191003422. The cubic root of 63981107 is about 399.9606357096.

The spelling of 63981107 in words is "sixty-three million, nine hundred eighty-one thousand, one hundred seven".