541666686 has 16 divisors (see below), whose sum is σ = 1181818368. Its totient is φ = 164141400.

The previous prime is 541666673. The next prime is 541666691. The reversal of 541666686 is 686666145.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4103470 + ... + 4103601.

It is an arithmetic number, because the mean of its divisors is an integer number (73863648).

Almost surely, 2^541666686 is an apocalyptic number.

541666686 is an abundant number, since it is smaller than the sum of its proper divisors (640151682).

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

541666686 is a wasteful number, since it uses less digits than its factorization.

541666686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207087.

The product of its digits is 1244160, while the sum is 48.

The square root of 541666686 is about 23273.7338216282. The cubic root of 541666686 is about 815.1622174498.

The spelling of 541666686 in words is "five hundred forty-one million, six hundred sixty-six thousand, six hundred eighty-six".