68704085 has 4 divisors (see below), whose sum is σ = 82444908. Its totient is φ = 54963264.

The previous prime is 68704081. The next prime is 68704087. The reversal of 68704085 is 58040786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 52171729 = 4066^2 + 7223^2 .

It is a cyclic number.

It is not a de Polignac number, because 68704085 - 2² = 68704081 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 (68704081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6870404 + ... + 6870413.

It is an arithmetic number, because the mean of its divisors is an integer number (20611227).

Almost surely, 2^68704085 is an apocalyptic number.

It is an amenable number.

68704085 is a deficient number, since it is larger than the sum of its proper divisors (13740823).

68704085 is a wasteful number, since it uses less digits than its factorization.

68704085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740822.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 68704085 is about 8288.7927347715. The cubic root of 68704085 is about 409.5694170847.

The spelling of 68704085 in words is "sixty-eight million, seven hundred four thousand, eighty-five".