2688141 has 4 divisors (see below), whose sum is σ = 3584192. Its totient is φ = 1792092.

The previous prime is 2688137. The next prime is 2688143. The reversal of 2688141 is 1418862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2688141 - 2² = 2688137 is a prime.

It is a super-2 number, since 2×2688141² = 14452204071762, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2688099 and 2688108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688143) 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, 448021 + ... + 448026.

It is an arithmetic number, because the mean of its divisors is an integer number (896048).

2^2688141 is an apocalyptic number.

It is an amenable number.

2688141 is a deficient number, since it is larger than the sum of its proper divisors (896051).

2688141 is an equidigital number, since it uses as much as digits as its factorization.

2688141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896050.

The product of its digits is 3072, while the sum is 30.

The square root of 2688141 is about 1639.5551225866. Note that the first 3 decimals coincide. The cubic root of 2688141 is about 139.0434969025.

The spelling of 2688141 in words is "two million, six hundred eighty-eight thousand, one hundred forty-one".