2688725 has 12 divisors (see below), whose sum is σ = 3590916. Its totient is φ = 1985280.

The previous prime is 2688701. The next prime is 2688731. The reversal of 2688725 is 5278862.

It can be written as a sum of positive squares in 6 ways, for example, as 106276 + 2582449 = 326^2 + 1607^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2688725 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3812 + ... + 4461.

It is an arithmetic number, because the mean of its divisors is an integer number (299243).

2^2688725 is an apocalyptic number.

2688725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2688725 is a deficient number, since it is larger than the sum of its proper divisors (902191).

2688725 is a wasteful number, since it uses less digits than its factorization.

2688725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8296 (or 8291 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 2688725 is about 1639.7332100070. The cubic root of 2688725 is about 139.0535652636.

The spelling of 2688725 in words is "two million, six hundred eighty-eight thousand, seven hundred twenty-five".