63978683 has 2 divisors, whose sum is σ = 63978684. Its totient is φ = 63978682.

The previous prime is 63978671. The next prime is 63978689. The reversal of 63978683 is 38687936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63978683 - 2¹⁴ = 63962299 is a prime.

It is not a weakly prime, because it can be changed into another prime (63978689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31989341 + 31989342.

It is an arithmetic number, because the mean of its divisors is an integer number (31989342).

Almost surely, 2^63978683 is an apocalyptic number.

63978683 is a deficient number, since it is larger than the sum of its proper divisors (1).

63978683 is an equidigital number, since it uses as much as digits as its factorization.

63978683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 63978683 is about 7998.6675765405. The cubic root of 63978683 is about 399.9555846517.

The spelling of 63978683 in words is "sixty-three million, nine hundred seventy-eight thousand, six hundred eighty-three".