542889686 has 16 divisors (see below), whose sum is σ = 845151840. Its totient is φ = 261233280.

The previous prime is 542889673. The next prime is 542889731. The reversal of 542889686 is 686988245.

It is a super-2 number, since 2×542889686² = 589458422330357192, which contains 22 as substring.

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, 2990 + ... + 33086.

It is an arithmetic number, because the mean of its divisors is an integer number (52821990).

Almost surely, 2^542889686 is an apocalyptic number.

542889686 is a deficient number, since it is larger than the sum of its proper divisors (302262154).

542889686 is a wasteful number, since it uses less digits than its factorization.

542889686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30439.

The product of its digits is 6635520, while the sum is 56.

The square root of 542889686 is about 23299.9932618016. The cubic root of 542889686 is about 815.7752598998.

The spelling of 542889686 in words is "five hundred forty-two million, eight hundred eighty-nine thousand, six hundred eighty-six".