68578785 has 32 divisors (see below), whose sum is σ = 133004160. Its totient is φ = 33249600.

The previous prime is 68578777. The next prime is 68578787. The reversal of 68578785 is 58787586.

It is a happy number.

68578785 is a `hidden beast` number, since 68 + 578 + 7 + 8 + 5 = 666.

It is not a de Polignac number, because 68578785 - 2³ = 68578777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68578787) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 21606 + ... + 24575.

It is an arithmetic number, because the mean of its divisors is an integer number (4156380).

Almost surely, 2^68578785 is an apocalyptic number.

It is an amenable number.

68578785 is a deficient number, since it is larger than the sum of its proper divisors (64425375).

68578785 is a wasteful number, since it uses less digits than its factorization.

68578785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46206 (or 46200 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The square root of 68578785 is about 8281.2308867704. The cubic root of 68578785 is about 409.3202796545.

The spelling of 68578785 in words is "sixty-eight million, five hundred seventy-eight thousand, seven hundred eighty-five".