6506661147 has 24 divisors (see below), whose sum is σ = 10097186112. Its totient is φ = 3716168400.

The previous prime is 6506661103. The next prime is 6506661167. The reversal of 6506661147 is 7411666056.

It is a happy number.

It is not a de Polignac number, because 6506661147 - 2⁷ = 6506661019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6506661099 and 6506661108.

It is not an unprimeable number, because it can be changed into a prime (6506661167) 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 23 ways as a sum of consecutive naturals, for example, 302872 + ... + 323642.

It is an arithmetic number, because the mean of its divisors is an integer number (420716088).

Almost surely, 2^6506661147 is an apocalyptic number.

6506661147 is a deficient number, since it is larger than the sum of its proper divisors (3590524965).

6506661147 is a wasteful number, since it uses less digits than its factorization.

6506661147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22919 (or 22912 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 6506661147 is about 80663.8775847033. The cubic root of 6506661147 is about 1866.8928685948.

The spelling of 6506661147 in words is "six billion, five hundred six million, six hundred sixty-one thousand, one hundred forty-seven".