2689720 has 32 divisors (see below), whose sum is σ = 6603120. Its totient is φ = 977920.

The previous prime is 2689717. The next prime is 2689727. The reversal of 2689720 is 279862.

2689720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2617 + ... + 3496.

2^2689720 is an apocalyptic number.

2689720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689720 is an abundant number, since it is smaller than the sum of its proper divisors (3913400).

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

2689720 is a wasteful number, since it uses less digits than its factorization.

2689720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135 (or 6131 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2689720 is about 1640.0365849578. The cubic root of 2689720 is about 139.0707160487.

The spelling of 2689720 in words is "two million, six hundred eighty-nine thousand, seven hundred twenty".