549668196 has 144 divisors (see below), whose sum is σ = 1769564160. Its totient is φ = 139700160.

The previous prime is 549668179. The next prime is 549668219. The reversal of 549668196 is 691866945.

It is a happy number.

549668196 is a `hidden beast` number, since 5 + 496 + 68 + 1 + 96 = 666.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 128175 + ... + 132393.

It is an arithmetic number, because the mean of its divisors is an integer number (12288640).

Almost surely, 2^549668196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549668196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884782080).

549668196 is an abundant number, since it is smaller than the sum of its proper divisors (1219895964).

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

549668196 is a wasteful number, since it uses less digits than its factorization.

549668196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294 (or 4289 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 549668196 is about 23445.0036468327. The cubic root of 549668196 is about 819.1564774120.

The spelling of 549668196 in words is "five hundred forty-nine million, six hundred sixty-eight thousand, one hundred ninety-six".