68085906 has 16 divisors (see below), whose sum is σ = 155625024. Its totient is φ = 19453104.

The previous prime is 68085887. The next prime is 68085907. The reversal of 68085906 is 60958086.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1621093 = 68085906 / (6 + 8 + 0 + 8 + 5 + 9 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (68085907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810505 + ... + 810588.

It is an arithmetic number, because the mean of its divisors is an integer number (9726564).

Almost surely, 2^68085906 is an apocalyptic number.

68085906 is an abundant number, since it is smaller than the sum of its proper divisors (87539118).

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

68085906 is a wasteful number, since it uses less digits than its factorization.

68085906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621105.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 68085906 is about 8251.4184235197. The cubic root of 68085906 is about 408.3373195594.

The spelling of 68085906 in words is "sixty-eight million, eighty-five thousand, nine hundred six".