516634474 has 4 divisors (see below), whose sum is σ = 774951714. Its totient is φ = 258317236.

The previous prime is 516634463. The next prime is 516634511. The reversal of 516634474 is 474436615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474436615 = 5 ⋅94887323.

It can be written as a sum of positive squares in only one way, i.e., 516425625 + 208849 = 22725^2 + 457^2 .

It is a super-2 number, since 2×516634474² = 533822359450513352, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129158617 + ... + 129158620.

Almost surely, 2^516634474 is an apocalyptic number.

516634474 is a deficient number, since it is larger than the sum of its proper divisors (258317240).

516634474 is a wasteful number, since it uses less digits than its factorization.

516634474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258317239.

The product of its digits is 241920, while the sum is 40.

The square root of 516634474 is about 22729.5946730249. The cubic root of 516634474 is about 802.4065419773.

The spelling of 516634474 in words is "five hundred sixteen million, six hundred thirty-four thousand, four hundred seventy-four".