2661198 has 8 divisors (see below), whose sum is σ = 5322408. Its totient is φ = 887064.

The previous prime is 2661181. The next prime is 2661199. The reversal of 2661198 is 8911662.

2661198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2661198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221761 + ... + 221772.

It is an arithmetic number, because the mean of its divisors is an integer number (665301).

2^2661198 is an apocalyptic number.

2661198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2661198 is a wasteful number, since it uses less digits than its factorization.

2661198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443538.

The product of its digits is 5184, while the sum is 33.

The square root of 2661198 is about 1631.3178721512. The cubic root of 2661198 is about 138.5773959543.

The spelling of 2661198 in words is "two million, six hundred sixty-one thousand, one hundred ninety-eight".