2647666953 has 16 divisors (see below), whose sum is σ = 3957186240. Its totient is φ = 1749488832.

The previous prime is 2647666913. The next prime is 2647666991. The reversal of 2647666953 is 3596667462.

It is not a de Polignac number, because 2647666953 - 2¹⁴ = 2647650569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2647666953.

It is not an unprimeable number, because it can be changed into a prime (2647666913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430851 + ... + 436952.

It is an arithmetic number, because the mean of its divisors is an integer number (247324140).

Almost surely, 2^2647666953 is an apocalyptic number.

It is an amenable number.

2647666953 is a deficient number, since it is larger than the sum of its proper divisors (1309519287).

2647666953 is a wasteful number, since it uses less digits than its factorization.

2647666953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867925 (or 867919 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 54.

The square root of 2647666953 is about 51455.4851595046. The cubic root of 2647666953 is about 1383.4212794266.

The spelling of 2647666953 in words is "two billion, six hundred forty-seven million, six hundred sixty-six thousand, nine hundred fifty-three".