516669 has 4 divisors (see below), whose sum is σ = 688896. Its totient is φ = 344444.

The previous prime is 516653. The next prime is 516673. The reversal of 516669 is 966615.

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 516669 - 2⁴ = 516653 is a prime.

It is a super-2 number, since 2×516669² = 533893711122, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516619) 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, 86109 + ... + 86114.

It is an arithmetic number, because the mean of its divisors is an integer number (172224).

2⁵¹⁶⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

516669 is a deficient number, since it is larger than the sum of its proper divisors (172227).

516669 is a wasteful number, since it uses less digits than its factorization.

516669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172226.

The product of its digits is 9720, while the sum is 33.

The square root of 516669 is about 718.7969115126. The cubic root of 516669 is about 80.2424416169.

Subtracting from 516669 its sum of digits (33), we obtain a triangular number (516636 = T₁₀₁₆).

The spelling of 516669 in words is "five hundred sixteen thousand, six hundred sixty-nine".