516993 has 4 divisors (see below), whose sum is σ = 689328. Its totient is φ = 344660.

The previous prime is 516991. The next prime is 517003. The reversal of 516993 is 399615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 516993 - 2¹ = 516991 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (516991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86163 + ... + 86168.

It is an arithmetic number, because the mean of its divisors is an integer number (172332).

2⁵¹⁶⁹⁹³ is an apocalyptic number.

It is an amenable number.

516993 is a deficient number, since it is larger than the sum of its proper divisors (172335).

516993 is a wasteful number, since it uses less digits than its factorization.

516993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172334.

The product of its digits is 7290, while the sum is 33.

The square root of 516993 is about 719.0222527850. The cubic root of 516993 is about 80.2592112950.

The spelling of 516993 in words is "five hundred sixteen thousand, nine hundred ninety-three".