685255068 has 36 divisors (see below), whose sum is σ = 1738319128. Its totient is φ = 227607840.

The previous prime is 685255037. The next prime is 685255079. The reversal of 685255068 is 860552586.

685255068 is a `hidden beast` number, since 68 + 525 + 5 + 0 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23443 + ... + 43818.

Almost surely, 2^685255068 is an apocalyptic number.

It is an amenable number.

685255068 is an abundant number, since it is smaller than the sum of its proper divisors (1053064060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685255068 is a wasteful number, since it uses less digits than its factorization.

685255068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67554 (or 67549 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 685255068 is about 26177.3770267382. The cubic root of 685255068 is about 881.6253827357.

The spelling of 685255068 in words is "six hundred eighty-five million, two hundred fifty-five thousand, sixty-eight".