683491409773 has 4 divisors (see below), whose sum is σ = 683495305468. Its totient is φ = 683487514080.

The previous prime is 683491409753. The next prime is 683491409789. The reversal of 683491409773 is 377904194386.

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 428503778404 + 254987631369 = 654602^2 + 504963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683491409773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683491409723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671618 + ... + 2039923.

It is an arithmetic number, because the mean of its divisors is an integer number (170873826367).

Almost surely, 2^683491409773 is an apocalyptic number.

It is an amenable number.

683491409773 is a deficient number, since it is larger than the sum of its proper divisors (3895695).

683491409773 is a wasteful number, since it uses less digits than its factorization.

683491409773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895694.

The product of its (nonzero) digits is 27433728, while the sum is 61.

The spelling of 683491409773 in words is "six hundred eighty-three billion, four hundred ninety-one million, four hundred nine thousand, seven hundred seventy-three".