63678143 has 2 divisors, whose sum is σ = 63678144. Its totient is φ = 63678142.

The previous prime is 63678137. The next prime is 63678151. The reversal of 63678143 is 34187636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63678143 - 2⁶ = 63678079 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 63678097 and 63678106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63678103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31839071 + 31839072.

It is an arithmetic number, because the mean of its divisors is an integer number (31839072).

Almost surely, 2^63678143 is an apocalyptic number.

63678143 is a deficient number, since it is larger than the sum of its proper divisors (1).

63678143 is an equidigital number, since it uses as much as digits as its factorization.

63678143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 63678143 is about 7979.8585827068. The cubic root of 63678143 is about 399.3283373879.

The spelling of 63678143 in words is "sixty-three million, six hundred seventy-eight thousand, one hundred forty-three".