68178836 has 12 divisors (see below), whose sum is σ = 130159680. Its totient is φ = 30990360.

The previous prime is 68178809. The next prime is 68178839. The reversal of 68178836 is 63887186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68178839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774716 + ... + 774803.

It is an arithmetic number, because the mean of its divisors is an integer number (10846640).

Almost surely, 2^68178836 is an apocalyptic number.

It is an amenable number.

68178836 is a deficient number, since it is larger than the sum of its proper divisors (61980844).

68178836 is a wasteful number, since it uses less digits than its factorization.

68178836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549534 (or 1549532 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 68178836 is about 8257.0476563963. The cubic root of 68178836 is about 408.5230140640.

The spelling of 68178836 in words is "sixty-eight million, one hundred seventy-eight thousand, eight hundred thirty-six".