68204681 has 8 divisors (see below), whose sum is σ = 70675200. Its totient is φ = 65751120.

The previous prime is 68204671. The next prime is 68204701. The reversal of 68204681 is 18640286.

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

It is a cyclic number.

It is not a de Polignac number, because 68204681 - 2¹⁰ = 68203657 is a prime.

It is a super-2 number, since 2×68204681² = 9303757020623522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68204611) 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, 4250 + ... + 12428.

It is an arithmetic number, because the mean of its divisors is an integer number (8834400).

Almost surely, 2^68204681 is an apocalyptic number.

It is an amenable number.

68204681 is a deficient number, since it is larger than the sum of its proper divisors (2470519).

68204681 is a wasteful number, since it uses less digits than its factorization.

68204681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 68204681 is about 8258.6125348027. The cubic root of 68204681 is about 408.5746280450.

The spelling of 68204681 in words is "sixty-eight million, two hundred four thousand, six hundred eighty-one".