68223793 has 12 divisors (see below), whose sum is σ = 75191284. Its totient is φ = 61855200.

The previous prime is 68223791. The next prime is 68223823. The reversal of 68223793 is 39732286.

It can be written as a sum of positive squares in 2 ways, for example, as 26388769 + 41835024 = 5137^2 + 6468^2 .

It is not a de Polignac number, because 68223793 - 2¹ = 68223791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68223791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79555 + ... + 80407.

Almost surely, 2^68223793 is an apocalyptic number.

It is an amenable number.

68223793 is a deficient number, since it is larger than the sum of its proper divisors (6967491).

68223793 is a wasteful number, since it uses less digits than its factorization.

68223793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1525 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 68223793 is about 8259.7695488434. The cubic root of 68223793 is about 408.6127874446.

The spelling of 68223793 in words is "sixty-eight million, two hundred twenty-three thousand, seven hundred ninety-three".