516905 has 8 divisors (see below), whose sum is σ = 629952. Its totient is φ = 407088.

The previous prime is 516883. The next prime is 516907. The reversal of 516905 is 509615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516905 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437 + ... + 1106.

It is an arithmetic number, because the mean of its divisors is an integer number (78744).

2⁵¹⁶⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

516905 is a deficient number, since it is larger than the sum of its proper divisors (113047).

516905 is a wasteful number, since it uses less digits than its factorization.

516905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 516905 is about 718.9610559690. The cubic root of 516905 is about 80.2546572609.

The spelling of 516905 in words is "five hundred sixteen thousand, nine hundred five".