2688223642 has 8 divisors (see below), whose sum is σ = 4342515156. Its totient is φ = 1240718592.

The previous prime is 2688223633. The next prime is 2688223687. The reversal of 2688223642 is 2463228862.

It can be written as a sum of positive squares in 2 ways, for example, as 2672786601 + 15437041 = 51699^2 + 3929^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 51696583 + ... + 51696634.

Almost surely, 2^2688223642 is an apocalyptic number.

2688223642 is a deficient number, since it is larger than the sum of its proper divisors (1654291514).

2688223642 is a wasteful number, since it uses less digits than its factorization.

2688223642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103393232.

The product of its digits is 442368, while the sum is 43.

The square root of 2688223642 is about 51848.0823367654. The cubic root of 2688223642 is about 1390.4492176764.

The spelling of 2688223642 in words is "two billion, six hundred eighty-eight million, two hundred twenty-three thousand, six hundred forty-two".