2198855 has 4 divisors (see below), whose sum is σ = 2638632. Its totient is φ = 1759080.

The previous prime is 2198843. The next prime is 2198863. The reversal of 2198855 is 5588912.

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

It is a de Polignac number, because none of the positive numbers 2^k-2198855 is a prime.

It is a super-2 number, since 2×2198855² = 9669926622050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219881 + ... + 219890.

It is an arithmetic number, because the mean of its divisors is an integer number (659658).

2^2198855 is an apocalyptic number.

2198855 is a deficient number, since it is larger than the sum of its proper divisors (439777).

2198855 is an equidigital number, since it uses as much as digits as its factorization.

2198855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439776.

The product of its digits is 28800, while the sum is 38.

The square root of 2198855 is about 1482.8536677636. The cubic root of 2198855 is about 130.0365774786.

The spelling of 2198855 in words is "two million, one hundred ninety-eight thousand, eight hundred fifty-five".