686474543 has 2 divisors, whose sum is σ = 686474544. Its totient is φ = 686474542.

The previous prime is 686474519. The next prime is 686474549. The reversal of 686474543 is 345474686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686474543 - 2¹⁸ = 686212399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686474549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343237271 + 343237272.

It is an arithmetic number, because the mean of its divisors is an integer number (343237272).

Almost surely, 2^686474543 is an apocalyptic number.

686474543 is a deficient number, since it is larger than the sum of its proper divisors (1).

686474543 is an equidigital number, since it uses as much as digits as its factorization.

686474543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 47.

The square root of 686474543 is about 26200.6592092642. The cubic root of 686474543 is about 882.1480508803.

The spelling of 686474543 in words is "six hundred eighty-six million, four hundred seventy-four thousand, five hundred forty-three".