516718634 has 4 divisors (see below), whose sum is σ = 775077954. Its totient is φ = 258359316.

The previous prime is 516718591. The next prime is 516718669. The reversal of 516718634 is 436817615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 414000409 + 102718225 = 20347^2 + 10135^2 .

It is a junction number, because it is equal to n+sod(n) for n = 516718591 and 516718600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129179657 + ... + 129179660.

Almost surely, 2^516718634 is an apocalyptic number.

516718634 is a deficient number, since it is larger than the sum of its proper divisors (258359320).

516718634 is a wasteful number, since it uses less digits than its factorization.

516718634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258359319.

The product of its digits is 120960, while the sum is 41.

The square root of 516718634 is about 22731.4459284930. The cubic root of 516718634 is about 802.4501104132.

The spelling of 516718634 in words is "five hundred sixteen million, seven hundred eighteen thousand, six hundred thirty-four".