68505686 has 8 divisors (see below), whose sum is σ = 102916440. Its totient is φ = 34200208.

The previous prime is 68505683. The next prime is 68505709. The reversal of 68505686 is 68650586.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68505683) 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, 24671 + ... + 27306.

It is an arithmetic number, because the mean of its divisors is an integer number (12864555).

Almost surely, 2^68505686 is an apocalyptic number.

68505686 is a deficient number, since it is larger than the sum of its proper divisors (34410754).

68505686 is a wasteful number, since it uses less digits than its factorization.

68505686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52638.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 68505686 is about 8276.8161753177. The cubic root of 68505686 is about 409.1747947184.

The spelling of 68505686 in words is "sixty-eight million, five hundred five thousand, six hundred eighty-six".