415643663 has 2 divisors, whose sum is σ = 415643664. Its totient is φ = 415643662.

The previous prime is 415643621. The next prime is 415643671. The reversal of 415643663 is 366346514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 415643663 - 2²⁰ = 414595087 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415642663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207821831 + 207821832.

It is an arithmetic number, because the mean of its divisors is an integer number (207821832).

Almost surely, 2^415643663 is an apocalyptic number.

415643663 is a deficient number, since it is larger than the sum of its proper divisors (1).

415643663 is an equidigital number, since it uses as much as digits as its factorization.

415643663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 38.

The square root of 415643663 is about 20387.3407535166. The cubic root of 415643663 is about 746.2890243493.

The spelling of 415643663 in words is "four hundred fifteen million, six hundred forty-three thousand, six hundred sixty-three".