2218611 has 8 divisors (see below), whose sum is σ = 3113920. Its totient is φ = 1401192.

The previous prime is 2218609. The next prime is 2218613. The reversal of 2218611 is 1168122.

It is an interprime number because it is at equal distance from previous prime (2218609) and next prime (2218613).

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

It is not a de Polignac number, because 2218611 - 2¹ = 2218609 is a prime.

It is the 1490-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2218613) by changing a digit.

It is a nontrivial repunit in base 1489.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19405 + ... + 19518.

It is an arithmetic number, because the mean of its divisors is an integer number (389240).

2^2218611 is an apocalyptic number.

2218611 is a deficient number, since it is larger than the sum of its proper divisors (895309).

2218611 is a wasteful number, since it uses less digits than its factorization.

2218611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38945.

The product of its digits is 192, while the sum is 21.

The square root of 2218611 is about 1489.5002517623. The cubic root of 2218611 is about 130.4248624291.

The spelling of 2218611 in words is "two million, two hundred eighteen thousand, six hundred eleven".