683443405 has 4 divisors (see below), whose sum is σ = 820132092. Its totient is φ = 546754720.

The previous prime is 683443393. The next prime is 683443429. The reversal of 683443405 is 504344386.

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 472671081 + 210772324 = 21741^2 + 14518^2 .

It is not a de Polignac number, because 683443405 - 2¹³ = 683435213 is a prime.

It is a Duffinian number.

It is a congruent 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, 68344336 + ... + 68344345.

It is an arithmetic number, because the mean of its divisors is an integer number (205033023).

Almost surely, 2^683443405 is an apocalyptic number.

It is an amenable number.

683443405 is a deficient number, since it is larger than the sum of its proper divisors (136688687).

683443405 is a wasteful number, since it uses less digits than its factorization.

683443405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136688686.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 683443405 is about 26142.7505247631. The cubic root of 683443405 is about 880.8477561329.

The spelling of 683443405 in words is "six hundred eighty-three million, four hundred forty-three thousand, four hundred five".