68716389 has 16 divisors (see below), whose sum is σ = 104842880. Its totient is φ = 39216960.

The previous prime is 68716381. The next prime is 68716391. The reversal of 68716389 is 98361786.

It is not a de Polignac number, because 68716389 - 2³ = 68716381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68716381) 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 15 ways as a sum of consecutive naturals, for example, 20919 + ... + 23979.

It is an arithmetic number, because the mean of its divisors is an integer number (6552680).

Almost surely, 2^68716389 is an apocalyptic number.

It is an amenable number.

68716389 is a deficient number, since it is larger than the sum of its proper divisors (36126491).

68716389 is a wasteful number, since it uses less digits than its factorization.

68716389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140.

The product of its digits is 435456, while the sum is 48.

The square root of 68716389 is about 8289.5349085458. The cubic root of 68716389 is about 409.5938651279.

The spelling of 68716389 in words is "sixty-eight million, seven hundred sixteen thousand, three hundred eighty-nine".