2605623 has 8 divisors (see below), whose sum is σ = 3485568. Its totient is φ = 1731384.

The previous prime is 2605613. The next prime is 2605627. The reversal of 2605623 is 3265062.

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

It is not a de Polignac number, because 2605623 - 2¹⁴ = 2589239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2605593 and 2605602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605627) 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, 211 + ... + 2292.

It is an arithmetic number, because the mean of its divisors is an integer number (435696).

2^2605623 is an apocalyptic number.

2605623 is a deficient number, since it is larger than the sum of its proper divisors (879945).

2605623 is a wasteful number, since it uses less digits than its factorization.

2605623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2605623 is about 1614.1942262318. The cubic root of 2605623 is about 137.6059436938.

The spelling of 2605623 in words is "two million, six hundred five thousand, six hundred twenty-three".