683978874609 has 4 divisors (see below), whose sum is σ = 911971832816. Its totient is φ = 455985916404.

The previous prime is 683978874589. The next prime is 683978874629. The reversal of 683978874609 is 906478879386.

683978874609 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (683978874589) and next prime (683978874629).

It is not a de Polignac number, because 683978874609 - 2¹⁷ = 683978743537 is a prime.

It is a super-2 number, since 2×683978874609² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683978874629) 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, 113996479099 + ... + 113996479104.

It is an arithmetic number, because the mean of its divisors is an integer number (227992958204).

Almost surely, 2^683978874609 is an apocalyptic number.

It is an amenable number.

683978874609 is a deficient number, since it is larger than the sum of its proper divisors (227992958207).

683978874609 is a wasteful number, since it uses less digits than its factorization.

683978874609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227992958206.

The product of its (nonzero) digits is 877879296, while the sum is 75.

The spelling of 683978874609 in words is "six hundred eighty-three billion, nine hundred seventy-eight million, eight hundred seventy-four thousand, six hundred nine".