68414721 has 8 divisors (see below), whose sum is σ = 91496544. Its totient is φ = 45471360.

The previous prime is 68414701. The next prime is 68414729. The reversal of 68414721 is 12741486.

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

It is not a de Polignac number, because 68414721 - 2¹³ = 68406529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68414729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33456 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (11437068).

Almost surely, 2^68414721 is an apocalyptic number.

It is an amenable number.

68414721 is a deficient number, since it is larger than the sum of its proper divisors (23081823).

68414721 is a wasteful number, since it uses less digits than its factorization.

68414721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69231.

The product of its digits is 10752, while the sum is 33.

The square root of 68414721 is about 8271.3191813640. The cubic root of 68414721 is about 408.9936074626.

The spelling of 68414721 in words is "sixty-eight million, four hundred fourteen thousand, seven hundred twenty-one".