63878141 has 2 divisors, whose sum is σ = 63878142. Its totient is φ = 63878140.

The previous prime is 63878137. The next prime is 63878147. The reversal of 63878141 is 14187836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33120025 + 30758116 = 5755^2 + 5546^2 .

It is a cyclic number.

It is not a de Polignac number, because 63878141 - 2² = 63878137 is a prime.

It is a Chen 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 = 63878095 and 63878104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63878147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31939070 + 31939071.

It is an arithmetic number, because the mean of its divisors is an integer number (31939071).

Almost surely, 2^63878141 is an apocalyptic number.

It is an amenable number.

63878141 is a deficient number, since it is larger than the sum of its proper divisors (1).

63878141 is an equidigital number, since it uses as much as digits as its factorization.

63878141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 63878141 is about 7992.3801836499. The cubic root of 63878141 is about 399.7459657840.

The spelling of 63878141 in words is "sixty-three million, eight hundred seventy-eight thousand, one hundred forty-one".