2784580668 has 18 divisors (see below), whose sum is σ = 7038801224. Its totient is φ = 928193544.

The previous prime is 2784580661. The next prime is 2784580679. The reversal of 2784580668 is 8660854872.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2784580661) 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, 38674696 + ... + 38674767.

Almost surely, 2^2784580668 is an apocalyptic number.

It is an amenable number.

2784580668 is an abundant number, since it is smaller than the sum of its proper divisors (4254220556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2784580668 is a wasteful number, since it uses less digits than its factorization.

2784580668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77349473 (or 77349468 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The square root of 2784580668 is about 52769.1260871355. The cubic root of 2784580668 is about 1406.8677292715.

The spelling of 2784580668 in words is "two billion, seven hundred eighty-four million, five hundred eighty thousand, six hundred sixty-eight".