6520328605 has 32 divisors (see below), whose sum is σ = 9173058048. Its totient is φ = 4355942400.

The previous prime is 6520328603. The next prime is 6520328641. The reversal of 6520328605 is 5068230256.

It is a happy number.

It is not a de Polignac number, because 6520328605 - 2¹ = 6520328603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520328603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1178245 + ... + 1183765.

It is an arithmetic number, because the mean of its divisors is an integer number (286658064).

Almost surely, 2^6520328605 is an apocalyptic number.

It is an amenable number.

6520328605 is a deficient number, since it is larger than the sum of its proper divisors (2652729443).

6520328605 is a wasteful number, since it uses less digits than its factorization.

6520328605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 6520328605 is about 80748.5517207584. The cubic root of 6520328605 is about 1868.1991112592.

The spelling of 6520328605 in words is "six billion, five hundred twenty million, three hundred twenty-eight thousand, six hundred five".