63663679 has 2 divisors, whose sum is σ = 63663680. Its totient is φ = 63663678.

The previous prime is 63663667. The next prime is 63663683. The reversal of 63663679 is 97636636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63663679 - 2⁵ = 63663647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63663619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31831839 + 31831840.

It is an arithmetic number, because the mean of its divisors is an integer number (31831840).

Almost surely, 2^63663679 is an apocalyptic number.

63663679 is a deficient number, since it is larger than the sum of its proper divisors (1).

63663679 is an equidigital number, since it uses as much as digits as its factorization.

63663679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 46.

The square root of 63663679 is about 7978.9522495125. The cubic root of 63663679 is about 399.2981003125.

The spelling of 63663679 in words is "sixty-three million, six hundred sixty-three thousand, six hundred seventy-nine".