539668 has 6 divisors (see below), whose sum is σ = 944426. Its totient is φ = 269832.

The previous prime is 539663. The next prime is 539677. The reversal of 539668 is 866935.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 3844 = 732^2 + 62^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539663) by changing a digit.

539668 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 as a sum of consecutive naturals, namely, 67455 + ... + 67462.

2⁵³⁹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

539668 is a deficient number, since it is larger than the sum of its proper divisors (404758).

539668 is a wasteful number, since it uses less digits than its factorization.

539668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134921 (or 134919 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 539668 is about 734.6209907156. The cubic root of 539668 is about 81.4158364349.

The spelling of 539668 in words is "five hundred thirty-nine thousand, six hundred sixty-eight".