685035071 has 8 divisors (see below), whose sum is σ = 809893920. Its totient is φ = 566925408.

The previous prime is 685035067. The next prime is 685035083. The reversal of 685035071 is 170530586.

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

It is not a de Polignac number, because 685035071 - 2² = 685035067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685031071) 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, 1687076 + ... + 1687481.

It is an arithmetic number, because the mean of its divisors is an integer number (101236740).

Almost surely, 2^685035071 is an apocalyptic number.

685035071 is a deficient number, since it is larger than the sum of its proper divisors (124858849).

685035071 is a wasteful number, since it uses less digits than its factorization.

685035071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374593.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 685035071 is about 26173.1746450445. The cubic root of 685035071 is about 881.5310258030.

The spelling of 685035071 in words is "six hundred eighty-five million, thirty-five thousand, seventy-one".