683396989585 has 4 divisors (see below), whose sum is σ = 820076387508. Its totient is φ = 546717591664.

The previous prime is 683396989567. The next prime is 683396989601. The reversal of 683396989585 is 585989693386.

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 545600867904 + 137796121681 = 738648^2 + 371209^2 .

It is a cyclic number.

It is not a de Polignac number, because 683396989585 - 2⁵ = 683396989553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68339698954 + ... + 68339698963.

It is an arithmetic number, because the mean of its divisors is an integer number (205019096877).

Almost surely, 2^683396989585 is an apocalyptic number.

It is an amenable number.

683396989585 is a deficient number, since it is larger than the sum of its proper divisors (136679397923).

683396989585 is a wasteful number, since it uses less digits than its factorization.

683396989585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136679397922.

The product of its digits is 3023308800, while the sum is 79.

The spelling of 683396989585 in words is "six hundred eighty-three billion, three hundred ninety-six million, nine hundred eighty-nine thousand, five hundred eighty-five".