549666785 has 8 divisors (see below), whose sum is σ = 659999016. Its totient is φ = 439467520.

The previous prime is 549666781. The next prime is 549666809. The reversal of 549666785 is 587666945.

It is a happy number.

549666785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 158734801 + 390931984 = 12599^2 + 19772^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 549666785 - 2² = 549666781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 549666785.

It is not an unprimeable number, because it can be changed into a prime (549666781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23906 + ... + 40875.

It is an arithmetic number, because the mean of its divisors is an integer number (82499877).

Almost surely, 2^549666785 is an apocalyptic number.

It is an amenable number.

549666785 is a deficient number, since it is larger than the sum of its proper divisors (110332231).

549666785 is a wasteful number, since it uses less digits than its factorization.

549666785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66483.

The product of its digits is 10886400, while the sum is 56.

The square root of 549666785 is about 23444.9735551141. The cubic root of 549666785 is about 819.1557764857.

The spelling of 549666785 in words is "five hundred forty-nine million, six hundred sixty-six thousand, seven hundred eighty-five".