68231805 has 8 divisors (see below), whose sum is σ = 109170912. Its totient is φ = 36390288.

The previous prime is 68231803. The next prime is 68231819. The reversal of 68231805 is 50813286.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68231805 - 2¹ = 68231803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68231803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274379 + ... + 2274408.

It is an arithmetic number, because the mean of its divisors is an integer number (13646364).

Almost surely, 2^68231805 is an apocalyptic number.

It is an amenable number.

68231805 is a deficient number, since it is larger than the sum of its proper divisors (40939107).

68231805 is a wasteful number, since it uses less digits than its factorization.

68231805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548795.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 68231805 is about 8260.2545360297. The cubic root of 68231805 is about 408.6287822433.

The spelling of 68231805 in words is "sixty-eight million, two hundred thirty-one thousand, eight hundred five".