5686409 has 4 divisors (see below), whose sum is σ = 5693460. Its totient is φ = 5679360.

The previous prime is 5686403. The next prime is 5686411. The reversal of 5686409 is 9046865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9046865 = 5 ⋅1809373.

It can be written as a sum of positive squares in 2 ways, for example, as 327184 + 5359225 = 572^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 5686409 - 2²⁰ = 4637833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5686403) 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, 2132 + ... + 3989.

It is an arithmetic number, because the mean of its divisors is an integer number (1423365).

Almost surely, 2^5686409 is an apocalyptic number.

It is an amenable number.

5686409 is a deficient number, since it is larger than the sum of its proper divisors (7051).

5686409 is an equidigital number, since it uses as much as digits as its factorization.

5686409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 5686409 is about 2384.6192568207. The cubic root of 5686409 is about 178.4895102206.

The spelling of 5686409 in words is "five million, six hundred eighty-six thousand, four hundred nine".