2689026680 has 64 divisors (see below), whose sum is σ = 6743412000. Its totient is φ = 959053824.

The previous prime is 2689026677. The next prime is 2689026701. The reversal of 2689026680 is 866209862.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 91145 + ... + 116984.

Almost surely, 2^2689026680 is an apocalyptic number.

2689026680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689026680 is an abundant number, since it is smaller than the sum of its proper divisors (4054385320).

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

2689026680 is a wasteful number, since it uses less digits than its factorization.

2689026680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208176 (or 208172 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 2689026680 is about 51855.8259022070. The cubic root of 2689026680 is about 1390.5876575959.

The spelling of 2689026680 in words is "two billion, six hundred eighty-nine million, twenty-six thousand, six hundred eighty".