516809965 has 16 divisors (see below), whose sum is σ = 712339200. Its totient is φ = 352598400.

The previous prime is 516809963. The next prime is 516809987. The reversal of 516809965 is 569908615.

It is not a de Polignac number, because 516809965 - 2¹ = 516809963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516809963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30136 + ... + 44065.

It is an arithmetic number, because the mean of its divisors is an integer number (44521200).

Almost surely, 2^516809965 is an apocalyptic number.

It is an amenable number.

516809965 is a deficient number, since it is larger than the sum of its proper divisors (195529235).

516809965 is a wasteful number, since it uses less digits than its factorization.

516809965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74412.

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 516809965 is about 22733.4547528527. The cubic root of 516809965 is about 802.4973858217.

The spelling of 516809965 in words is "five hundred sixteen million, eight hundred nine thousand, nine hundred sixty-five".