68838081 has 8 divisors (see below), whose sum is σ = 98844480. Its totient is φ = 42361872.

The previous prime is 68838079. The next prime is 68838089. The reversal of 68838081 is 18083886.

It is a happy number.

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

It is not a de Polignac number, because 68838081 - 2¹ = 68838079 is a prime.

It is a super-2 number, since 2×68838081² = 9477362791525122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68838089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882501 + ... + 882578.

It is an arithmetic number, because the mean of its divisors is an integer number (12355560).

Almost surely, 2^68838081 is an apocalyptic number.

It is an amenable number.

68838081 is a deficient number, since it is larger than the sum of its proper divisors (30006399).

68838081 is a wasteful number, since it uses less digits than its factorization.

68838081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765095.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 68838081 is about 8296.8717598864. The cubic root of 68838081 is about 409.8355100623.

The spelling of 68838081 in words is "sixty-eight million, eight hundred thirty-eight thousand, eighty-one".