68681306 has 8 divisors (see below), whose sum is σ = 106345344. Its totient is φ = 33232860.

The previous prime is 68681281. The next prime is 68681311. The reversal of 68681306 is 60318686.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68681306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553820 + ... + 553943.

It is an arithmetic number, because the mean of its divisors is an integer number (13293168).

Almost surely, 2^68681306 is an apocalyptic number.

68681306 is a deficient number, since it is larger than the sum of its proper divisors (37664038).

68681306 is a wasteful number, since it uses less digits than its factorization.

68681306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107796.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68681306 is about 8287.4185365529. The cubic root of 68681306 is about 409.5241475153.

The spelling of 68681306 in words is "sixty-eight million, six hundred eighty-one thousand, three hundred six".