2198665 has 8 divisors (see below), whose sum is σ = 3015360. Its totient is φ = 1507632.

The previous prime is 2198663. The next prime is 2198671. The reversal of 2198665 is 5668912.

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

It is not a de Polignac number, because 2198665 - 2¹ = 2198663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2198663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31375 + ... + 31444.

It is an arithmetic number, because the mean of its divisors is an integer number (376920).

2^2198665 is an apocalyptic number.

It is an amenable number.

2198665 is a deficient number, since it is larger than the sum of its proper divisors (816695).

2198665 is an equidigital number, since it uses as much as digits as its factorization.

2198665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62831.

The product of its digits is 25920, while the sum is 37.

The square root of 2198665 is about 1482.7896007189. The cubic root of 2198665 is about 130.0328319442.

The spelling of 2198665 in words is "two million, one hundred ninety-eight thousand, six hundred sixty-five".