516600640 has 28 divisors (see below), whose sum is σ = 1230156036. Its totient is φ = 206640128.

The previous prime is 516600587. The next prime is 516600649. The reversal of 516600640 is 46006615.

It can be written as a sum of positive squares in 2 ways, for example, as 232745536 + 283855104 = 15256^2 + 16848^2 .

It is a junction number, because it is equal to n+sod(n) for n = 516600599 and 516600608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516600649) 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, 806869 + ... + 807508.

Almost surely, 2^516600640 is an apocalyptic number.

It is an amenable number.

516600640 is an abundant number, since it is smaller than the sum of its proper divisors (713555396).

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

516600640 is a wasteful number, since it uses less digits than its factorization.

516600640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614394 (or 1614384 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 516600640 is about 22728.8503888780. The cubic root of 516600640 is about 802.3890252629.

It can be divided in two parts, 516 and 600640, that added together give a triangular number (601156 = T₁₀₉₆).

The spelling of 516600640 in words is "five hundred sixteen million, six hundred thousand, six hundred forty".