683761609 has 4 divisors (see below), whose sum is σ = 684018580. Its totient is φ = 683504640.

The previous prime is 683761583. The next prime is 683761613. The reversal of 683761609 is 906167386.

683761609 is digitally balanced in base 2, 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 52345225 + 631416384 = 7235^2 + 25128^2 .

It is a cyclic number.

It is not a de Polignac number, because 683761609 - 2⁵ = 683761577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683761649) 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, 124452 + ... + 129829.

It is an arithmetic number, because the mean of its divisors is an integer number (171004645).

Almost surely, 2^683761609 is an apocalyptic number.

It is an amenable number.

683761609 is a deficient number, since it is larger than the sum of its proper divisors (256971).

683761609 is a wasteful number, since it uses less digits than its factorization.

683761609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256970.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 683761609 is about 26148.8357102185. The cubic root of 683761609 is about 880.9844393797.

The spelling of 683761609 in words is "six hundred eighty-three million, seven hundred sixty-one thousand, six hundred nine".