686477443 has 2 divisors, whose sum is σ = 686477444. Its totient is φ = 686477442.

The previous prime is 686477437. The next prime is 686477489. The reversal of 686477443 is 344774686.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686477443 - 2²⁹ = 149606531 is a prime.

It is a weakly prime.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343238721 + 343238722.

It is an arithmetic number, because the mean of its divisors is an integer number (343238722).

Almost surely, 2^686477443 is an apocalyptic number.

686477443 is a deficient number, since it is larger than the sum of its proper divisors (1).

686477443 is an equidigital number, since it uses as much as digits as its factorization.

686477443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 49.

The square root of 686477443 is about 26200.7145513247. The cubic root of 686477443 is about 882.1492930850.

The spelling of 686477443 in words is "six hundred eighty-six million, four hundred seventy-seven thousand, four hundred forty-three".