516664634 has 8 divisors (see below), whose sum is σ = 775487028. Its totient is φ = 258168960.

The previous prime is 516664619. The next prime is 516664639. The reversal of 516664634 is 436466615.

It can be written as a sum of positive squares in 2 ways, for example, as 500640625 + 16024009 = 22375^2 + 4003^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 516664591 and 516664600.

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, 77687 + ... + 84074.

Almost surely, 2^516664634 is an apocalyptic number.

516664634 is a deficient number, since it is larger than the sum of its proper divisors (258822394).

516664634 is a wasteful number, since it uses less digits than its factorization.

516664634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163360.

The product of its digits is 311040, while the sum is 41.

The square root of 516664634 is about 22730.2581155604. The cubic root of 516664634 is about 802.4221559246.

The spelling of 516664634 in words is "five hundred sixteen million, six hundred sixty-four thousand, six hundred thirty-four".