68085855 has 12 divisors (see below), whose sum is σ = 118015560. Its totient is φ = 36312432.

The previous prime is 68085851. The next prime is 68085863. The reversal of 68085855 is 55858086.

68085855 is a `hidden beast` number, since 68 + 0 + 8 + 585 + 5 = 666.

It is not a de Polignac number, because 68085855 - 2² = 68085851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1513019 = 68085855 / (6 + 8 + 0 + 8 + 5 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 68085855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68085851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 756465 + ... + 756554.

It is an arithmetic number, because the mean of its divisors is an integer number (9834630).

Almost surely, 2^68085855 is an apocalyptic number.

68085855 is a deficient number, since it is larger than the sum of its proper divisors (49929705).

68085855 is a wasteful number, since it uses less digits than its factorization.

68085855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513030 (or 1513027 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The square root of 68085855 is about 8251.4153331413. The cubic root of 68085855 is about 408.3372176038.

The spelling of 68085855 in words is "sixty-eight million, eighty-five thousand, eight hundred fifty-five".