63871447 has 2 divisors, whose sum is σ = 63871448. Its totient is φ = 63871446.

The previous prime is 63871429. The next prime is 63871459. The reversal of 63871447 is 74417836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63871447 - 2⁷ = 63871319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63871477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31935723 + 31935724.

It is an arithmetic number, because the mean of its divisors is an integer number (31935724).

Almost surely, 2^63871447 is an apocalyptic number.

63871447 is a deficient number, since it is larger than the sum of its proper divisors (1).

63871447 is an equidigital number, since it uses as much as digits as its factorization.

63871447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 40.

The square root of 63871447 is about 7991.9613988057. The cubic root of 63871447 is about 399.7320017324.

The spelling of 63871447 in words is "sixty-three million, eight hundred seventy-one thousand, four hundred forty-seven".