686453143 has 2 divisors, whose sum is σ = 686453144. Its totient is φ = 686453142.

The previous prime is 686453137. The next prime is 686453167. The reversal of 686453143 is 341354686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686453143 - 2⁹ = 686452631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 686453096 and 686453105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686453543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343226571 + 343226572.

It is an arithmetic number, because the mean of its divisors is an integer number (343226572).

Almost surely, 2^686453143 is an apocalyptic number.

686453143 is a deficient number, since it is larger than the sum of its proper divisors (1).

686453143 is an equidigital number, since it uses as much as digits as its factorization.

686453143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 686453143 is about 26200.2508194101. The cubic root of 686453143 is about 882.1388841580.

The spelling of 686453143 in words is "six hundred eighty-six million, four hundred fifty-three thousand, one hundred forty-three".