6610516065 has 24 divisors (see below), whose sum is σ = 11464945128. Its totient is φ = 3523541760.

The previous prime is 6610516063. The next prime is 6610516067. The reversal of 6610516065 is 5606150166.

It is an interprime number because it is at equal distance from previous prime (6610516063) and next prime (6610516067).

It can be written as a sum of positive squares in 4 ways, for example, as 106254864 + 6504261201 = 10308^2 + 80649^2 .

It is not a de Polignac number, because 6610516065 - 2¹ = 6610516063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6610516063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36157 + ... + 120533.

It is an arithmetic number, because the mean of its divisors is an integer number (477706047).

Almost surely, 2^6610516065 is an apocalyptic number.

It is an amenable number.

6610516065 is a deficient number, since it is larger than the sum of its proper divisors (4854429063).

6610516065 is a wasteful number, since it uses less digits than its factorization.

6610516065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86129 (or 86126 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 6610516065 is about 81305.0801918306. The cubic root of 6610516065 is about 1876.7731791172.

The spelling of 6610516065 in words is "six billion, six hundred ten million, five hundred sixteen thousand, sixty-five".