6506507673 has 6 divisors (see below), whose sum is σ = 9398288874. Its totient is φ = 4337671776.

The previous prime is 6506507671. The next prime is 6506507701. The reversal of 6506507673 is 3767056056.

6506507673 is a `hidden beast` number, since 6 + 506 + 5 + 0 + 76 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5242918464 + 1263589209 = 72408^2 + 35547^2 .

It is not a de Polignac number, because 6506507673 - 2¹ = 6506507671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6506507671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361472640 + ... + 361472657.

It is an arithmetic number, because the mean of its divisors is an integer number (1566381479).

Almost surely, 2^6506507673 is an apocalyptic number.

It is an amenable number.

6506507673 is a deficient number, since it is larger than the sum of its proper divisors (2891781201).

6506507673 is a wasteful number, since it uses less digits than its factorization.

6506507673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722945303 (or 722945300 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The square root of 6506507673 is about 80662.9262610773. The cubic root of 6506507673 is about 1866.8781902130.

The spelling of 6506507673 in words is "six billion, five hundred six million, five hundred seven thousand, six hundred seventy-three".