5623405 has 4 divisors (see below), whose sum is σ = 6748092. Its totient is φ = 4498720.

The previous prime is 5623403. The next prime is 5623421. The reversal of 5623405 is 5043265.

5623405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1929321 + 3694084 = 1389^2 + 1922^2 .

It is not a de Polignac number, because 5623405 - 2¹ = 5623403 is a prime.

It is a d-powerful number, because it can be written as 5⁵ + 6⁸ + 2¹⁷ + 3¹³ + 4⁹ + 0 + 5⁹ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5623405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5623403) 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, 562336 + ... + 562345.

It is an arithmetic number, because the mean of its divisors is an integer number (1687023).

Almost surely, 2^5623405 is an apocalyptic number.

It is an amenable number.

5623405 is a deficient number, since it is larger than the sum of its proper divisors (1124687).

5623405 is a wasteful number, since it uses less digits than its factorization.

5623405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124686.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 5623405 is about 2371.3719657616. The cubic root of 5623405 is about 177.8278540211.

The spelling of 5623405 in words is "five million, six hundred twenty-three thousand, four hundred five".