5268639 has 4 divisors (see below), whose sum is σ = 7024856. Its totient is φ = 3512424.

The previous prime is 5268619. The next prime is 5268647. The reversal of 5268639 is 9368625.

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

It is not a de Polignac number, because 5268639 - 2⁵ = 5268607 is a prime.

It is a D-number.

It is a Duffinian number.

5268639 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5268597 and 5268606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5268619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878104 + ... + 878109.

It is an arithmetic number, because the mean of its divisors is an integer number (1756214).

Almost surely, 2^5268639 is an apocalyptic number.

5268639 is a deficient number, since it is larger than the sum of its proper divisors (1756217).

5268639 is a wasteful number, since it uses less digits than its factorization.

5268639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756216.

The product of its digits is 77760, while the sum is 39.

The square root of 5268639 is about 2295.3516070528. The cubic root of 5268639 is about 174.0067707763.

It can be divided in two parts, 52686 and 39, that added together give a palindrome (52725).

The spelling of 5268639 in words is "five million, two hundred sixty-eight thousand, six hundred thirty-nine".