516634 has 4 divisors (see below), whose sum is σ = 774954. Its totient is φ = 258316.

The previous prime is 516623. The next prime is 516643. The reversal of 516634 is 436615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436615 = 5 ⋅87323.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 61009 = 675^2 + 247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 516599 and 516608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129157 + ... + 129160.

2⁵¹⁶⁶³⁴ is an apocalyptic number.

516634 is a deficient number, since it is larger than the sum of its proper divisors (258320).

516634 is a wasteful number, since it uses less digits than its factorization.

516634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258319.

The product of its digits is 2160, while the sum is 25.

The square root of 516634 is about 718.7725648632. The cubic root of 516634 is about 80.2406296581.

The spelling of 516634 in words is "five hundred sixteen thousand, six hundred thirty-four".