513347986 has 8 divisors (see below), whose sum is σ = 771738300. Its totient is φ = 256101888.

The previous prime is 513347981. The next prime is 513347987. The reversal of 513347986 is 689743315.

It can be written as a sum of positive squares in 2 ways, for example, as 422508025 + 90839961 = 20555^2 + 9531^2 .

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

It is not an unprimeable number, because it can be changed into a prime (513347981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284931 + ... + 286726.

Almost surely, 2^513347986 is an apocalyptic number.

513347986 is a deficient number, since it is larger than the sum of its proper divisors (258390314).

513347986 is a wasteful number, since it uses less digits than its factorization.

513347986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572108.

The product of its digits is 544320, while the sum is 46.

The square root of 513347986 is about 22657.1839821281. The cubic root of 513347986 is about 800.7014608028.

The spelling of 513347986 in words is "five hundred thirteen million, three hundred forty-seven thousand, nine hundred eighty-six".