516664630 has 8 divisors (see below), whose sum is σ = 929996352. Its totient is φ = 206665848.

The previous prime is 516664619. The next prime is 516664639. The reversal of 516664630 is 36466615.

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

It is a self number, because there is not a number n which added to its sum of digits gives 516664630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516664639) 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, 25833222 + ... + 25833241.

It is an arithmetic number, because the mean of its divisors is an integer number (116249544).

Almost surely, 2^516664630 is an apocalyptic number.

516664630 is a deficient number, since it is larger than the sum of its proper divisors (413331722).

516664630 is a wasteful number, since it uses less digits than its factorization.

516664630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51666470.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 516664630 is about 22730.2580275720. The cubic root of 516664630 is about 802.4221538538.

It can be divided in two parts, 5166 and 64630, that added together give a palindrome (69796).

The spelling of 516664630 in words is "five hundred sixteen million, six hundred sixty-four thousand, six hundred thirty".