220504073 has 4 divisors (see below), whose sum is σ = 221549328. Its totient is φ = 219458820.

The previous prime is 220504051. The next prime is 220504079. The reversal of 220504073 is 370405022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220504073 - 2⁸ = 220503817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220504079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522311 + ... + 522732.

It is an arithmetic number, because the mean of its divisors is an integer number (55387332).

Almost surely, 2^220504073 is an apocalyptic number.

It is an amenable number.

220504073 is a deficient number, since it is larger than the sum of its proper divisors (1045255).

220504073 is a wasteful number, since it uses less digits than its factorization.

220504073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045254.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 220504073 is about 14849.3795493280. The cubic root of 220504073 is about 604.1417815851.

Adding to 220504073 its reverse (370405022), we get a palindrome (590909095).

The spelling of 220504073 in words is "two hundred twenty million, five hundred four thousand, seventy-three".