68083685 has 4 divisors (see below), whose sum is σ = 81700428. Its totient is φ = 54466944.

The previous prime is 68083681. The next prime is 68083711. The reversal of 68083685 is 58638086.

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 8392609 + 59691076 = 2897^2 + 7726^2 .

It is a cyclic number.

It is not a de Polignac number, because 68083685 - 2² = 68083681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68083681) 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, 6808364 + ... + 6808373.

It is an arithmetic number, because the mean of its divisors is an integer number (20425107).

Almost surely, 2^68083685 is an apocalyptic number.

It is an amenable number.

68083685 is a deficient number, since it is larger than the sum of its proper divisors (13616743).

68083685 is a wasteful number, since it uses less digits than its factorization.

68083685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13616742.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 68083685 is about 8251.2838395004. The cubic root of 68083685 is about 408.3328794479.

The spelling of 68083685 in words is "sixty-eight million, eighty-three thousand, six hundred eighty-five".