6520413065 has 16 divisors (see below), whose sum is σ = 8437201920. Its totient is φ = 4821252480.

The previous prime is 6520413061. The next prime is 6520413089. The reversal of 6520413065 is 5603140256.

It is not a de Polignac number, because 6520413065 - 2² = 6520413061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6520413061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833129 + ... + 840918.

It is an arithmetic number, because the mean of its divisors is an integer number (527325120).

Almost surely, 2^6520413065 is an apocalyptic number.

It is an amenable number.

6520413065 is a deficient number, since it is larger than the sum of its proper divisors (1916788855).

6520413065 is a wasteful number, since it uses less digits than its factorization.

6520413065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674112.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 6520413065 is about 80749.0747005809. The cubic root of 6520413065 is about 1868.2071776940.

The spelling of 6520413065 in words is "six billion, five hundred twenty million, four hundred thirteen thousand, sixty-five".