549666980 has 12 divisors (see below), whose sum is σ = 1154300700. Its totient is φ = 219866784.

The previous prime is 549666881. The next prime is 549666989. The reversal of 549666980 is 89666945.

It can be written as a sum of positive squares in 2 ways, for example, as 82156096 + 467510884 = 9064^2 + 21622^2 .

It is not an unprimeable number, because it can be changed into a prime (549666989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13741655 + ... + 13741694.

It is an arithmetic number, because the mean of its divisors is an integer number (96191725).

Almost surely, 2^549666980 is an apocalyptic number.

It is an amenable number.

549666980 is an abundant number, since it is smaller than the sum of its proper divisors (604633720).

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

549666980 is a wasteful number, since it uses less digits than its factorization.

549666980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27483358 (or 27483356 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 549666980 is about 23444.9777137877. The cubic root of 549666980 is about 819.1558733537.

The spelling of 549666980 in words is "five hundred forty-nine million, six hundred sixty-six thousand, nine hundred eighty".