68281685 has 8 divisors (see below), whose sum is σ = 84581376. Its totient is φ = 52863120.

The previous prime is 68281679. The next prime is 68281699. The reversal of 68281685 is 58618286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68281685 - 2⁴ = 68281669 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 220109 + ... + 220418.

It is an arithmetic number, because the mean of its divisors is an integer number (10572672).

Almost surely, 2^68281685 is an apocalyptic number.

It is an amenable number.

68281685 is a deficient number, since it is larger than the sum of its proper divisors (16299691).

68281685 is a wasteful number, since it uses less digits than its factorization.

68281685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440563.

The product of its digits is 184320, while the sum is 44.

The square root of 68281685 is about 8263.2732618497. The cubic root of 68281685 is about 408.7283322939.

The spelling of 68281685 in words is "sixty-eight million, two hundred eighty-one thousand, six hundred eighty-five".