516681111 has 8 divisors (see below), whose sum is σ = 690594160. Its totient is φ = 343611072.

The previous prime is 516681049. The next prime is 516681127. The reversal of 516681111 is 111186615.

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

It is not a de Polignac number, because 516681111 - 2⁹ = 516680599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516681211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209320 + ... + 211773.

It is an arithmetic number, because the mean of its divisors is an integer number (86324270).

Almost surely, 2^516681111 is an apocalyptic number.

516681111 is a deficient number, since it is larger than the sum of its proper divisors (173913049).

516681111 is a wasteful number, since it uses less digits than its factorization.

516681111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421505.

The product of its digits is 1440, while the sum is 30.

The square root of 516681111 is about 22730.6205590609. The cubic root of 516681111 is about 802.4306858738.

The spelling of 516681111 in words is "five hundred sixteen million, six hundred eighty-one thousand, one hundred eleven".