686533141 has 32 divisors (see below), whose sum is σ = 845273088. Its totient is φ = 544864320.

The previous prime is 686533129. The next prime is 686533189. The reversal of 686533141 is 141335686.

686533141 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 686533141 - 2⁹ = 686532629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 686533141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686533241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906535 + ... + 907291.

It is an arithmetic number, because the mean of its divisors is an integer number (26414784).

Almost surely, 2^686533141 is an apocalyptic number.

It is an amenable number.

686533141 is a deficient number, since it is larger than the sum of its proper divisors (158739947).

686533141 is a wasteful number, since it uses less digits than its factorization.

686533141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 51840, while the sum is 37.

The square root of 686533141 is about 26201.7774397082. Note that the first 3 decimals coincide. The cubic root of 686533141 is about 882.1731504469.

The spelling of 686533141 in words is "six hundred eighty-six million, five hundred thirty-three thousand, one hundred forty-one".