686436541 has 24 divisors (see below), whose sum is σ = 877106880. Its totient is φ = 533155392.

The previous prime is 686436533. The next prime is 686436559. The reversal of 686436541 is 145634686.

It is a happy number.

686436541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686436541 - 2³ = 686436533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686436571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5385 + ... + 37441.

It is an arithmetic number, because the mean of its divisors is an integer number (36546120).

Almost surely, 2^686436541 is an apocalyptic number.

It is an amenable number.

686436541 is a deficient number, since it is larger than the sum of its proper divisors (190670339).

686436541 is a wasteful number, since it uses less digits than its factorization.

686436541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32113 (or 32106 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 686436541 is about 26199.9339884665. The cubic root of 686436541 is about 882.1317725350.

The spelling of 686436541 in words is "six hundred eighty-six million, four hundred thirty-six thousand, five hundred forty-one".