685524241 has 8 divisors (see below), whose sum is σ = 695822400. Its totient is φ = 675244080.

The previous prime is 685524193. The next prime is 685524251. The reversal of 685524241 is 142425586.

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

It is not a de Polignac number, because 685524241 - 2²⁵ = 651969809 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 685524241.

It is not an unprimeable number, because it can be changed into a prime (685524251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85555 + ... + 93223.

It is an arithmetic number, because the mean of its divisors is an integer number (86977800).

Almost surely, 2^685524241 is an apocalyptic number.

It is an amenable number.

685524241 is a deficient number, since it is larger than the sum of its proper divisors (10298159).

685524241 is a wasteful number, since it uses less digits than its factorization.

685524241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8999.

The product of its digits is 76800, while the sum is 37.

The square root of 685524241 is about 26182.5178506575. The cubic root of 685524241 is about 881.7408038369.

The spelling of 685524241 in words is "six hundred eighty-five million, five hundred twenty-four thousand, two hundred forty-one".