2840668663 has 32 divisors (see below), whose sum is σ = 3543920640. Its totient is φ = 2221966080.

The previous prime is 2840668661. The next prime is 2840668711. The reversal of 2840668663 is 3668660482.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2840668663 - 2¹ = 2840668661 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 (2840668661) 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 31 ways as a sum of consecutive naturals, for example, 959181 + ... + 962137.

It is an arithmetic number, because the mean of its divisors is an integer number (110747520).

Almost surely, 2^2840668663 is an apocalyptic number.

2840668663 is a deficient number, since it is larger than the sum of its proper divisors (703251977).

2840668663 is a wasteful number, since it uses less digits than its factorization.

2840668663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 1990656, while the sum is 49.

The square root of 2840668663 is about 53297.9236274735. The cubic root of 2840668663 is about 1416.2508823705.

The spelling of 2840668663 in words is "two billion, eight hundred forty million, six hundred sixty-eight thousand, six hundred sixty-three".