549436685 has 24 divisors (see below), whose sum is σ = 800459520. Its totient is φ = 354587904.

The previous prime is 549436681. The next prime is 549436687. The reversal of 549436685 is 586634945.

It is not a de Polignac number, because 549436685 - 2² = 549436681 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549436681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17045 + ... + 37274.

It is an arithmetic number, because the mean of its divisors is an integer number (33352480).

Almost surely, 2^549436685 is an apocalyptic number.

It is an amenable number.

549436685 is a deficient number, since it is larger than the sum of its proper divisors (251022835).

549436685 is a wasteful number, since it uses less digits than its factorization.

549436685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54365 (or 54348 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The square root of 549436685 is about 23440.0658062216. The cubic root of 549436685 is about 819.0414562849.

The spelling of 549436685 in words is "five hundred forty-nine million, four hundred thirty-six thousand, six hundred eighty-five".