683208409 has 8 divisors (see below), whose sum is σ = 740637632. Its totient is φ = 626475600.

The previous prime is 683208401. The next prime is 683208413. The reversal of 683208409 is 904802386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 683208409 - 2³ = 683208401 is a prime.

It is a super-2 number, since 2×683208409² = 933547460256622562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683208401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172059 + ... + 175984.

It is an arithmetic number, because the mean of its divisors is an integer number (92579704).

Almost surely, 2^683208409 is an apocalyptic number.

It is an amenable number.

683208409 is a deficient number, since it is larger than the sum of its proper divisors (57429223).

683208409 is a wasteful number, since it uses less digits than its factorization.

683208409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348207.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 683208409 is about 26138.2556610039. The cubic root of 683208409 is about 880.7467873100.

It can be divided in two parts, 68320 and 8409, that added together give a square (76729 = 277²).

The spelling of 683208409 in words is "six hundred eighty-three million, two hundred eight thousand, four hundred nine".