68393555 has 8 divisors (see below), whose sum is σ = 82269744. Its totient is φ = 54583200.

The previous prime is 68393531. The next prime is 68393557. The reversal of 68393555 is 55539386.

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

It is not a de Polignac number, because 68393555 - 2¹⁰ = 68392531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68393557) 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, 14141 + ... + 18350.

It is an arithmetic number, because the mean of its divisors is an integer number (10283718).

Almost surely, 2^68393555 is an apocalyptic number.

68393555 is a deficient number, since it is larger than the sum of its proper divisors (13876189).

68393555 is a wasteful number, since it uses less digits than its factorization.

68393555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32917.

The product of its digits is 486000, while the sum is 44.

The square root of 68393555 is about 8270.0396008725. The cubic root of 68393555 is about 408.9514252565.

The spelling of 68393555 in words is "sixty-eight million, three hundred ninety-three thousand, five hundred fifty-five".