68393870 has 8 divisors (see below), whose sum is σ = 123108984. Its totient is φ = 27357544.

The previous prime is 68393807. The next prime is 68393887. The reversal of 68393870 is 7839386.

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

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 3419684 + ... + 3419703.

It is an arithmetic number, because the mean of its divisors is an integer number (15388623).

Almost surely, 2^68393870 is an apocalyptic number.

68393870 is a deficient number, since it is larger than the sum of its proper divisors (54715114).

68393870 is a wasteful number, since it uses less digits than its factorization.

68393870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6839394.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 68393870 is about 8270.0586454994. The cubic root of 68393870 is about 408.9520530910.

The spelling of 68393870 in words is "sixty-eight million, three hundred ninety-three thousand, eight hundred seventy".