68386730 has 16 divisors (see below), whose sum is σ = 126423720. Its totient is φ = 26615232.

The previous prime is 68386711. The next prime is 68386781. The reversal of 68386730 is 3768386.

It can be written as a sum of positive squares in 4 ways, for example, as 68277169 + 109561 = 8263^2 + 331^2 .

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, 92045 + ... + 92784.

Almost surely, 2^68386730 is an apocalyptic number.

68386730 is a deficient number, since it is larger than the sum of its proper divisors (58036990).

68386730 is a wasteful number, since it uses less digits than its factorization.

68386730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184873.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 68386730 is about 8269.6269565199. The cubic root of 68386730 is about 408.9378217022.

The spelling of 68386730 in words is "sixty-eight million, three hundred eighty-six thousand, seven hundred thirty".