558978 has 16 divisors (see below), whose sum is σ = 1277760. Its totient is φ = 159696.

The previous prime is 558973. The next prime is 558979. The reversal of 558978 is 879855.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 13309 = 558978 / (5 + 5 + 8 + 9 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (558973) by changing a digit.

558978 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, 6613 + ... + 6696.

It is an arithmetic number, because the mean of its divisors is an integer number (79860).

2⁵⁵⁸⁹⁷⁸ is an apocalyptic number.

558978 is an abundant number, since it is smaller than the sum of its proper divisors (718782).

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

558978 is a wasteful number, since it uses less digits than its factorization.

558978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13321.

The product of its digits is 100800, while the sum is 42.

The square root of 558978 is about 747.6483130456. The cubic root of 558978 is about 82.3755331575.

The spelling of 558978 in words is "five hundred fifty-eight thousand, nine hundred seventy-eight".