516565616 has 40 divisors (see below), whose sum is σ = 1204030080. Its totient is φ = 209732544.

The previous prime is 516565607. The next prime is 516565633. The reversal of 516565616 is 616565615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119246 + ... + 123501.

It is an arithmetic number, because the mean of its divisors is an integer number (30100752).

Almost surely, 2^516565616 is an apocalyptic number.

516565616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

516565616 is an abundant number, since it is smaller than the sum of its proper divisors (687464464).

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

516565616 is a wasteful number, since it uses less digits than its factorization.

516565616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242781 (or 242775 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 516565616 is about 22728.0799013027. The cubic root of 516565616 is about 802.3708916498.

Subtracting 516565616 from its reverse (616565615), we obtain a palindrome (99999999).

The spelling of 516565616 in words is "five hundred sixteen million, five hundred sixty-five thousand, six hundred sixteen".