2689120664 has 16 divisors (see below), whose sum is σ = 5086723320. Its totient is φ = 1332661120.

The previous prime is 2689120663. The next prime is 2689120691. The reversal of 2689120664 is 4660219862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689120661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1486442 + ... + 1488249.

Almost surely, 2^2689120664 is an apocalyptic number.

It is an amenable number.

2689120664 is a deficient number, since it is larger than the sum of its proper divisors (2397602656).

2689120664 is a wasteful number, since it uses less digits than its factorization.

2689120664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974810 (or 2974806 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 2689120664 is about 51856.7320991209. The cubic root of 2689120664 is about 1390.6038581874.

The spelling of 2689120664 in words is "two billion, six hundred eighty-nine million, one hundred twenty thousand, six hundred sixty-four".