5628709 has 4 divisors (see below), whose sum is σ = 5635980. Its totient is φ = 5621440.

The previous prime is 5628703. The next prime is 5628713. The reversal of 5628709 is 9078265.

5628709 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 324900 + 5303809 = 570^2 + 2303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5628709 is a prime.

It is a d-powerful number, because it can be written as 5⁷ + 6⁴ + 2²¹ + 8⁷ + 7⁷ + 0 + 9⁶ .

It is a Duffinian number.

5628709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5628703) 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, 2314 + ... + 4075.

It is an arithmetic number, because the mean of its divisors is an integer number (1408995).

Almost surely, 2^5628709 is an apocalyptic number.

It is an amenable number.

5628709 is a deficient number, since it is larger than the sum of its proper divisors (7271).

5628709 is an equidigital number, since it uses as much as digits as its factorization.

5628709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 5628709 is about 2372.4900421287. The cubic root of 5628709 is about 177.8837455762.

The spelling of 5628709 in words is "five million, six hundred twenty-eight thousand, seven hundred nine".