541866 has 16 divisors (see below), whose sum is σ = 1167264. Its totient is φ = 166704.

The previous prime is 541859. The next prime is 541889. The reversal of 541866 is 668145.

It is an unprimeable number.

541866 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, 3396 + ... + 3551.

It is an arithmetic number, because the mean of its divisors is an integer number (72954).

2⁵⁴¹⁸⁶⁶ is an apocalyptic number.

541866 is an abundant number, since it is smaller than the sum of its proper divisors (625398).

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

541866 is a wasteful number, since it uses less digits than its factorization.

541866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6965.

The product of its digits is 5760, while the sum is 30.

The square root of 541866 is about 736.1154800709. The cubic root of 541866 is about 81.5262188719.

The spelling of 541866 in words is "five hundred forty-one thousand, eight hundred sixty-six".