63971771 has 2 divisors, whose sum is σ = 63971772. Its totient is φ = 63971770.

The previous prime is 63971759. The next prime is 63971783. The reversal of 63971771 is 17717936.

63971771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (63971759) and next prime (63971783).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63971771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63971701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31985885 + 31985886.

It is an arithmetic number, because the mean of its divisors is an integer number (31985886).

Almost surely, 2^63971771 is an apocalyptic number.

63971771 is a deficient number, since it is larger than the sum of its proper divisors (1).

63971771 is an equidigital number, since it uses as much as digits as its factorization.

63971771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 41.

The square root of 63971771 is about 7998.2354929072. The cubic root of 63971771 is about 399.9411809346.

The spelling of 63971771 in words is "sixty-three million, nine hundred seventy-one thousand, seven hundred seventy-one".