2668693616 has 20 divisors (see below), whose sum is σ = 5247769032. Its totient is φ = 1314430656.

The previous prime is 2668693603. The next prime is 2668693627. The reversal of 2668693616 is 6163968662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243655 + ... + 1245798.

Almost surely, 2^2668693616 is an apocalyptic number.

It is an amenable number.

2668693616 is a deficient number, since it is larger than the sum of its proper divisors (2579075416).

2668693616 is a wasteful number, since it uses less digits than its factorization.

2668693616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489528 (or 2489522 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 53.

The square root of 2668693616 is about 51659.4000739459. The cubic root of 2668693616 is about 1387.0738117604.

The spelling of 2668693616 in words is "two billion, six hundred sixty-eight million, six hundred ninety-three thousand, six hundred sixteen".