2649668063 has 8 divisors (see below), whose sum is σ = 3037931520. Its totient is φ = 2263839480.

The previous prime is 2649668017. The next prime is 2649668081. The reversal of 2649668063 is 3608669462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2649668063 - 2⁸ = 2649667807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649668963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606383 + ... + 610736.

It is an arithmetic number, because the mean of its divisors is an integer number (379741440).

Almost surely, 2^2649668063 is an apocalyptic number.

2649668063 is a deficient number, since it is larger than the sum of its proper divisors (388263457).

2649668063 is a wasteful number, since it uses less digits than its factorization.

2649668063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217437.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The square root of 2649668063 is about 51474.9265468150. The cubic root of 2649668063 is about 1383.7697221689.

The spelling of 2649668063 in words is "two billion, six hundred forty-nine million, six hundred sixty-eight thousand, sixty-three".