516663313 has 4 divisors (see below), whose sum is σ = 517209840. Its totient is φ = 516116788.

The previous prime is 516663281. The next prime is 516663317. The reversal of 516663313 is 313366615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 516663313 - 2⁵ = 516663281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516663317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271843 + ... + 273736.

It is an arithmetic number, because the mean of its divisors is an integer number (129302460).

Almost surely, 2^516663313 is an apocalyptic number.

It is an amenable number.

516663313 is a deficient number, since it is larger than the sum of its proper divisors (546527).

516663313 is an equidigital number, since it uses as much as digits as its factorization.

516663313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546526.

The product of its digits is 29160, while the sum is 34.

The square root of 516663313 is about 22730.2290573588. The cubic root of 516663313 is about 802.4214720506.

The spelling of 516663313 in words is "five hundred sixteen million, six hundred sixty-three thousand, three hundred thirteen".