519668 has 6 divisors (see below), whose sum is σ = 909426. Its totient is φ = 259832.

The previous prime is 519667. The next prime is 519683. The reversal of 519668 is 866915.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 40804 = 692^2 + 202^2 .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (519667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64955 + ... + 64962.

It is an arithmetic number, because the mean of its divisors is an integer number (151571).

2⁵¹⁹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

519668 is a deficient number, since it is larger than the sum of its proper divisors (389758).

519668 is a wasteful number, since it uses less digits than its factorization.

519668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129921 (or 129919 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 519668 is about 720.8800177561. The cubic root of 519668 is about 80.3973976700.

The spelling of 519668 in words is "five hundred nineteen thousand, six hundred sixty-eight".