68778338 has 16 divisors (see below), whose sum is σ = 106437240. Its totient is φ = 33307776.

The previous prime is 68778331. The next prime is 68778377. The reversal of 68778338 is 83387786.

It can be written as a sum of positive squares in 4 ways, for example, as 61199329 + 7579009 = 7823^2 + 2753^2 .

It is not an unprimeable number, because it can be changed into a prime (68778331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15248 + ... + 19236.

Almost surely, 2^68778338 is an apocalyptic number.

68778338 is a deficient number, since it is larger than the sum of its proper divisors (37658902).

68778338 is a wasteful number, since it uses less digits than its factorization.

68778338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261.

The product of its digits is 1354752, while the sum is 50.

The square root of 68778338 is about 8293.2706455294. The cubic root of 68778338 is about 409.7169134502.

The spelling of 68778338 in words is "sixty-eight million, seven hundred seventy-eight thousand, three hundred thirty-eight".