63868477 has 2 divisors, whose sum is σ = 63868478. Its totient is φ = 63868476.

The previous prime is 63868457. The next prime is 63868499. The reversal of 63868477 is 77486836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58079641 + 5788836 = 7621^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 63868477 - 2⁷ = 63868349 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63868477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63868457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31934238 + 31934239.

It is an arithmetic number, because the mean of its divisors is an integer number (31934239).

Almost surely, 2^63868477 is an apocalyptic number.

It is an amenable number.

63868477 is a deficient number, since it is larger than the sum of its proper divisors (1).

63868477 is an equidigital number, since it uses as much as digits as its factorization.

63868477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 49.

The square root of 63868477 is about 7991.7755849373. The cubic root of 63868477 is about 399.7258058368.

The spelling of 63868477 in words is "sixty-three million, eight hundred sixty-eight thousand, four hundred seventy-seven".