219601 has 4 divisors (see below), whose sum is σ = 224752. Its totient is φ = 214452.

The previous prime is 219599. The next prime is 219607. The reversal of 219601 is 106912.

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 219601 - 2¹ = 219599 is a prime.

It is a Duffinian number.

219601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (219607) 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, 2511 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (56188).

2²¹⁹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

219601 is a deficient number, since it is larger than the sum of its proper divisors (5151).

219601 is an equidigital number, since it uses as much as digits as its factorization.

219601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 219601 is about 468.6160475272. The cubic root of 219601 is about 60.3315900178.

It can be divided in two parts, 219 and 601, that added together give a triangular number (820 = T₄₀).

The spelling of 219601 in words is "two hundred nineteen thousand, six hundred one".