68404055 has 8 divisors (see below), whose sum is σ = 82134000. Its totient is φ = 54690496.

The previous prime is 68404019. The next prime is 68404067. The reversal of 68404055 is 55040486.

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 68404055 - 2¹⁰ = 68403031 is a prime.

It is a super-2 number, since 2×68404055² = 9358229480886050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8771 + ... + 14619.

It is an arithmetic number, because the mean of its divisors is an integer number (10266750).

Almost surely, 2^68404055 is an apocalyptic number.

68404055 is a deficient number, since it is larger than the sum of its proper divisors (13729945).

68404055 is a wasteful number, since it uses less digits than its factorization.

68404055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 68404055 is about 8270.6743981371. The cubic root of 68404055 is about 408.9723520346.

The spelling of 68404055 in words is "sixty-eight million, four hundred four thousand, fifty-five".