73273563 has 24 divisors (see below), whose sum is σ = 116014080. Its totient is φ = 44195760.

The previous prime is 73273537. The next prime is 73273567. The reversal of 73273563 is 36537237.

It is a happy number.

73273563 is a `hidden beast` number, since 73 + 27 + 3 + 563 = 666.

It is not a de Polignac number, because 73273563 - 2⁸ = 73273307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73273567) 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 in 23 ways as a sum of consecutive naturals, for example, 20418 + ... + 23736.

It is an arithmetic number, because the mean of its divisors is an integer number (4833920).

Almost surely, 2^73273563 is an apocalyptic number.

73273563 is a deficient number, since it is larger than the sum of its proper divisors (42740517).

73273563 is a wasteful number, since it uses less digits than its factorization.

73273563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559 (or 3556 counting only the distinct ones).

The product of its digits is 79380, while the sum is 36.

The square root of 73273563 is about 8559.9978387848. The cubic root of 73273563 is about 418.4553293961.

The spelling of 73273563 in words is "seventy-three million, two hundred seventy-three thousand, five hundred sixty-three".