220735 has 8 divisors (see below), whose sum is σ = 267696. Its totient is φ = 174720.

The previous prime is 220721. The next prime is 220747. The reversal of 220735 is 537022.

220735 = T₁₀₆ + T₁₀₇ + ... + T₁₃₅.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-220735 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 487 + ... + 823.

It is an arithmetic number, because the mean of its divisors is an integer number (33462).

2²²⁰⁷³⁵ is an apocalyptic number.

220735 is a deficient number, since it is larger than the sum of its proper divisors (46961).

220735 is a wasteful number, since it uses less digits than its factorization.

220735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 220735 is about 469.8244352947. The cubic root of 220735 is about 60.4352607585.

Adding to 220735 its reverse (537022), we get a palindrome (757757).

The spelling of 220735 in words is "two hundred twenty thousand, seven hundred thirty-five".