516684381 has 8 divisors (see below), whose sum is σ = 689041920. Its totient is φ = 344391552.

The previous prime is 516684361. The next prime is 516684463. The reversal of 516684381 is 183486615.

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

It is not a de Polignac number, because 516684381 - 2¹⁷ = 516553309 is a prime.

It is a super-2 number, since 2×516684381² = 533925499138706322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516684361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7341 + ... + 32973.

It is an arithmetic number, because the mean of its divisors is an integer number (86130240).

Almost surely, 2^516684381 is an apocalyptic number.

It is an amenable number.

516684381 is a deficient number, since it is larger than the sum of its proper divisors (172357539).

516684381 is a wasteful number, since it uses less digits than its factorization.

516684381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32355.

The product of its digits is 138240, while the sum is 42.

The square root of 516684381 is about 22730.6924883515. The cubic root of 516684381 is about 802.4323786928.

The spelling of 516684381 in words is "five hundred sixteen million, six hundred eighty-four thousand, three hundred eighty-one".