549660168 has 84 divisors (see below), whose sum is σ = 1550262015. Its totient is φ = 182623248.

The previous prime is 549660127. The next prime is 549660169. The reversal of 549660168 is 861066945.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 274830084 + 274830084 = 16578^2 + 16578^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16578.

It is not an unprimeable number, because it can be changed into a prime (549660169) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1790271 + ... + 1790577.

Almost surely, 2^549660168 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 549660168

549660168 is an abundant number, since it is smaller than the sum of its proper divisors (1000601847).

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

549660168 is an frugal number, since it uses more digits than its factorization.

549660168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 549660168 is about 23444.8324370212. The cubic root of 549660168 is about 819.1524894181.

The spelling of 549660168 in words is "five hundred forty-nine million, six hundred sixty thousand, one hundred sixty-eight".