686748441 has 8 divisors (see below), whose sum is σ = 916424320. Its totient is φ = 457452432.

The previous prime is 686748427. The next prime is 686748451. The reversal of 686748441 is 144847686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 686748441 - 2²⁶ = 619639577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686748451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90721 + ... + 97998.

It is an arithmetic number, because the mean of its divisors is an integer number (114553040).

Almost surely, 2^686748441 is an apocalyptic number.

It is an amenable number.

686748441 is a deficient number, since it is larger than the sum of its proper divisors (229675879).

686748441 is a wasteful number, since it uses less digits than its factorization.

686748441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189935.

The product of its digits is 1032192, while the sum is 48.

The square root of 686748441 is about 26205.8856175478. The cubic root of 686748441 is about 882.2653586823.

The spelling of 686748441 in words is "six hundred eighty-six million, seven hundred forty-eight thousand, four hundred forty-one".