220405073 has 8 divisors (see below), whose sum is σ = 265149120. Its totient is φ = 178975440.

The previous prime is 220405069. The next prime is 220405091. The reversal of 220405073 is 370504022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220405073 - 2² = 220405069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220405013) 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 7 ways as a sum of consecutive naturals, for example, 828458 + ... + 828723.

It is an arithmetic number, because the mean of its divisors is an integer number (33143640).

Almost surely, 2^220405073 is an apocalyptic number.

It is an amenable number.

220405073 is a deficient number, since it is larger than the sum of its proper divisors (44744047).

220405073 is a wasteful number, since it uses less digits than its factorization.

220405073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657207.

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

The square root of 220405073 is about 14846.0457024758. The cubic root of 220405073 is about 604.0513539439.

Adding to 220405073 its reverse (370504022), we get a palindrome (590909095).

The spelling of 220405073 in words is "two hundred twenty million, four hundred five thousand, seventy-three".