663542163 has 12 divisors (see below), whose sum is σ = 959098920. Its totient is φ = 442061856.

The previous prime is 663542141. The next prime is 663542189. The reversal of 663542163 is 361245366.

663542163 is a `hidden beast` number, since 6 + 635 + 4 + 2 + 16 + 3 = 666.

It is not a de Polignac number, because 663542163 - 2¹³ = 663533971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663542123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10498 + ... + 37911.

It is an arithmetic number, because the mean of its divisors is an integer number (79924910).

Almost surely, 2^663542163 is an apocalyptic number.

663542163 is a deficient number, since it is larger than the sum of its proper divisors (295556757).

663542163 is a wasteful number, since it uses less digits than its factorization.

663542163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49938 (or 49935 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 663542163 is about 25759.3121608478. The cubic root of 663542163 is about 872.2135743975.

The spelling of 663542163 in words is "six hundred sixty-three million, five hundred forty-two thousand, one hundred sixty-three".