6505695801 has 18 divisors (see below), whose sum is σ = 10329063290. Its totient is φ = 3942845280.

The previous prime is 6505695799. The next prime is 6505695839. The reversal of 6505695801 is 1085965056.

It is a happy number.

6505695801 is a `hidden beast` number, since 6 + 5 + 0 + 5 + 69 + 580 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5405778576 + 1099917225 = 73524^2 + 33165^2 .

It is not a de Polignac number, because 6505695801 - 2¹ = 6505695799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6505695601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2985916 + ... + 2988093.

Almost surely, 2^6505695801 is an apocalyptic number.

It is an amenable number.

6505695801 is a deficient number, since it is larger than the sum of its proper divisors (3823367489).

6505695801 is a wasteful number, since it uses less digits than its factorization.

6505695801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974037 (or 5974023 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 6505695801 is about 80657.8936062677. The cubic root of 6505695801 is about 1866.8005382553.

The spelling of 6505695801 in words is "six billion, five hundred five million, six hundred ninety-five thousand, eight hundred one".