63873779 has 2 divisors, whose sum is σ = 63873780. Its totient is φ = 63873778.

The previous prime is 63873749. The next prime is 63873793. The reversal of 63873779 is 97737836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63873779 - 2¹⁶ = 63808243 is a prime.

It is not a weakly prime, because it can be changed into another prime (63873749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31936889 + 31936890.

It is an arithmetic number, because the mean of its divisors is an integer number (31936890).

Almost surely, 2^63873779 is an apocalyptic number.

63873779 is a deficient number, since it is larger than the sum of its proper divisors (1).

63873779 is an equidigital number, since it uses as much as digits as its factorization.

63873779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 50.

The square root of 63873779 is about 7992.1072940746. The cubic root of 63873779 is about 399.7368665232.

The spelling of 63873779 in words is "sixty-three million, eight hundred seventy-three thousand, seven hundred seventy-nine".