685906894 has 8 divisors (see below), whose sum is σ = 1029382560. Its totient is φ = 342779376.

The previous prime is 685906853. The next prime is 685906901. The reversal of 685906894 is 498609586.

685906894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82054 + ... + 90025.

It is an arithmetic number, because the mean of its divisors is an integer number (128672820).

Almost surely, 2^685906894 is an apocalyptic number.

685906894 is a deficient number, since it is larger than the sum of its proper divisors (343475666).

685906894 is a wasteful number, since it uses less digits than its factorization.

685906894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174074.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The square root of 685906894 is about 26189.8242453057. The cubic root of 685906894 is about 881.9048330500.

The spelling of 685906894 in words is "six hundred eighty-five million, nine hundred six thousand, eight hundred ninety-four".