68243178 has 16 divisors (see below), whose sum is σ = 136578240. Its totient is φ = 22732416.

The previous prime is 68243167. The next prime is 68243191. The reversal of 68243178 is 87134286.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9283 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (8536140).

Almost surely, 2^68243178 is an apocalyptic number.

68243178 is an abundant number, since it is smaller than the sum of its proper divisors (68335062).

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

68243178 is a wasteful number, since it uses less digits than its factorization.

68243178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661.

The product of its digits is 64512, while the sum is 39.

The square root of 68243178 is about 8260.9429243882. The cubic root of 68243178 is about 408.6514846422.

The spelling of 68243178 in words is "sixty-eight million, two hundred forty-three thousand, one hundred seventy-eight".