68864238 has 24 divisors (see below), whose sum is σ = 150579000. Its totient is φ = 22743504.

The previous prime is 68864209. The next prime is 68864239. The reversal of 68864238 is 83246886.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68864193 and 68864202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68864239) 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 11 ways as a sum of consecutive naturals, for example, 15588 + ... + 19511.

It is an arithmetic number, because the mean of its divisors is an integer number (6274125).

Almost surely, 2^68864238 is an apocalyptic number.

68864238 is an abundant number, since it is smaller than the sum of its proper divisors (81714762).

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

68864238 is a wasteful number, since it uses less digits than its factorization.

68864238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35216 (or 35213 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 68864238 is about 8298.4479271729. The cubic root of 68864238 is about 409.8874130680.

The spelling of 68864238 in words is "sixty-eight million, eight hundred sixty-four thousand, two hundred thirty-eight".