220673539 has 4 divisors (see below), whose sum is σ = 224291200. Its totient is φ = 217055880.

The previous prime is 220673533. The next prime is 220673591. The reversal of 220673539 is 935376022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220673539 - 2⁹ = 220673027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220673498 and 220673507.

It is not an unprimeable number, because it can be changed into a prime (220673533) 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 3 ways as a sum of consecutive naturals, for example, 1808739 + ... + 1808860.

It is an arithmetic number, because the mean of its divisors is an integer number (56072800).

Almost surely, 2^220673539 is an apocalyptic number.

220673539 is a deficient number, since it is larger than the sum of its proper divisors (3617661).

220673539 is an equidigital number, since it uses as much as digits as its factorization.

220673539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617660.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 220673539 is about 14855.0846177327. The cubic root of 220673539 is about 604.2965108121.

The spelling of 220673539 in words is "two hundred twenty million, six hundred seventy-three thousand, five hundred thirty-nine".