2808623 has 8 divisors (see below), whose sum is σ = 2926896. Its totient is φ = 2692800.

The previous prime is 2808607. The next prime is 2808647. The reversal of 2808623 is 3268082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2808623 - 2⁴ = 2808607 is a prime.

It is a super-2 number, since 2×2808623² = 15776726312258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808683) 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, 1940 + ... + 3062.

It is an arithmetic number, because the mean of its divisors is an integer number (365862).

2^2808623 is an apocalyptic number.

2808623 is a deficient number, since it is larger than the sum of its proper divisors (118273).

2808623 is a wasteful number, since it uses less digits than its factorization.

2808623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2808623 is about 1675.8946864287. The cubic root of 2808623 is about 141.0905141207.

The spelling of 2808623 in words is "two million, eight hundred eight thousand, six hundred twenty-three".