545986 has 16 divisors (see below), whose sum is σ = 953280. Its totient is φ = 229680.

The previous prime is 545959. The next prime is 546001. The reversal of 545986 is 689545.

It is an unprimeable number.

545986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496 + ... + 1156.

It is an arithmetic number, because the mean of its divisors is an integer number (59580).

2⁵⁴⁵⁹⁸⁶ is an apocalyptic number.

545986 is a deficient number, since it is larger than the sum of its proper divisors (407294).

545986 is a wasteful number, since it uses less digits than its factorization.

545986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its digits is 43200, while the sum is 37.

The square root of 545986 is about 738.9086547064. The cubic root of 545986 is about 81.7323216768.

The spelling of 545986 in words is "five hundred forty-five thousand, nine hundred eighty-six".