516581716 has 36 divisors (see below), whose sum is σ = 1080049908. Its totient is φ = 215405568.

The previous prime is 516581701. The next prime is 516581717. The reversal of 516581716 is 617185615.

It can be written as a sum of positive squares in 2 ways, for example, as 423536400 + 93045316 = 20580^2 + 9646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516581717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28365 + ... + 42868.

Almost surely, 2^516581716 is an apocalyptic number.

It is an amenable number.

516581716 is an abundant number, since it is smaller than the sum of its proper divisors (563468192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

516581716 is a wasteful number, since it uses less digits than its factorization.

516581716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71288 (or 71279 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 516581716 is about 22728.4340859638. The cubic root of 516581716 is about 802.3792274976.

The spelling of 516581716 in words is "five hundred sixteen million, five hundred eighty-one thousand, seven hundred sixteen".