6913609 has 4 divisors (see below), whose sum is σ = 6991380. Its totient is φ = 6835840.

The previous prime is 6913607. The next prime is 6913631. The reversal of 6913609 is 9063196.

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 1507984 + 5405625 = 1228^2 + 2325^2 .

It is a cyclic number.

It is not a de Polignac number, because 6913609 - 2¹ = 6913607 is a prime.

It is a Duffinian number.

6913609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6913603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38752 + ... + 38929.

It is an arithmetic number, because the mean of its divisors is an integer number (1747845).

Almost surely, 2^6913609 is an apocalyptic number.

It is an amenable number.

6913609 is a deficient number, since it is larger than the sum of its proper divisors (77771).

6913609 is an equidigital number, since it uses as much as digits as its factorization.

6913609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77770.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 6913609 is about 2629.3742601615. The cubic root of 6913609 is about 190.5029059244.

The spelling of 6913609 in words is "six million, nine hundred thirteen thousand, six hundred nine".