686322443 has 4 divisors (see below), whose sum is σ = 689575368. Its totient is φ = 683069520.

The previous prime is 686322379. The next prime is 686322479. The reversal of 686322443 is 344223686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 686322443 - 2⁶ = 686322379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686322397 and 686322406.

It is not an unprimeable number, because it can be changed into a prime (686322643) 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, 1626146 + ... + 1626567.

It is an arithmetic number, because the mean of its divisors is an integer number (172393842).

Almost surely, 2^686322443 is an apocalyptic number.

686322443 is a deficient number, since it is larger than the sum of its proper divisors (3252925).

686322443 is a wasteful number, since it uses less digits than its factorization.

686322443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252924.

The product of its digits is 165888, while the sum is 38.

The square root of 686322443 is about 26197.7564497420. The cubic root of 686322443 is about 882.0828944805.

The spelling of 686322443 in words is "six hundred eighty-six million, three hundred twenty-two thousand, four hundred forty-three".