5680909 has 4 divisors (see below), whose sum is σ = 6117916. Its totient is φ = 5243904.

The previous prime is 5680901. The next prime is 5680921. The reversal of 5680909 is 9090865.

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 459684 + 5221225 = 678^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 5680909 - 2³ = 5680901 is a prime.

It is a Duffinian number.

5680909 is a modest number, since divided by 909 gives 568 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5680901) 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, 218484 + ... + 218509.

It is an arithmetic number, because the mean of its divisors is an integer number (1529479).

Almost surely, 2^5680909 is an apocalyptic number.

It is an amenable number.

5680909 is a deficient number, since it is larger than the sum of its proper divisors (437007).

5680909 is a wasteful number, since it uses less digits than its factorization.

5680909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437006.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 5680909 is about 2383.4657538970. The cubic root of 5680909 is about 178.4319455384.

The spelling of 5680909 in words is "five million, six hundred eighty thousand, nine hundred nine".