549620 has 12 divisors (see below), whose sum is σ = 1154244. Its totient is φ = 219840.

The previous prime is 549607. The next prime is 549623. The reversal of 549620 is 26945.

It can be written as a sum of positive squares in 2 ways, for example, as 394384 + 155236 = 628^2 + 394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 549620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549623) 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, 13721 + ... + 13760.

It is an arithmetic number, because the mean of its divisors is an integer number (96187).

2⁵⁴⁹⁶²⁰ is an apocalyptic number.

It is an amenable number.

549620 is an abundant number, since it is smaller than the sum of its proper divisors (604624).

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

549620 is a wasteful number, since it uses less digits than its factorization.

549620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27490 (or 27488 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 549620 is about 741.3636084945. The cubic root of 549620 is about 81.9132534956.

The spelling of 549620 in words is "five hundred forty-nine thousand, six hundred twenty".