516656687 has 8 divisors (see below), whose sum is σ = 525774480. Its totient is φ = 507551040.

The previous prime is 516656681. The next prime is 516656689. The reversal of 516656687 is 786656615.

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

It is not a de Polignac number, because 516656687 - 2⁴ = 516656671 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 (516656681) 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, 144137 + ... + 147677.

It is an arithmetic number, because the mean of its divisors is an integer number (65721810).

Almost surely, 2^516656687 is an apocalyptic number.

516656687 is a deficient number, since it is larger than the sum of its proper divisors (9117793).

516656687 is a wasteful number, since it uses less digits than its factorization.

516656687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073.

The product of its digits is 1814400, while the sum is 50.

The square root of 516656687 is about 22730.0833038509. The cubic root of 516656687 is about 802.4180417913.

The spelling of 516656687 in words is "five hundred sixteen million, six hundred fifty-six thousand, six hundred eighty-seven".