68389785 has 16 divisors (see below), whose sum is σ = 121582080. Its totient is φ = 36474480.

The previous prime is 68389777. The next prime is 68389819. The reversal of 68389785 is 58798386.

It is a happy number.

It is not a de Polignac number, because 68389785 - 2³ = 68389777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253161 + ... + 253430.

It is an arithmetic number, because the mean of its divisors is an integer number (7598880).

Almost surely, 2^68389785 is an apocalyptic number.

It is an amenable number.

68389785 is a deficient number, since it is larger than the sum of its proper divisors (53192295).

68389785 is a wasteful number, since it uses less digits than its factorization.

68389785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506605 (or 506599 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 68389785 is about 8269.8116665375. The cubic root of 68389785 is about 408.9439110241.

The spelling of 68389785 in words is "sixty-eight million, three hundred eighty-nine thousand, seven hundred eighty-five".