68393144 has 16 divisors (see below), whose sum is σ = 129861600. Its totient is φ = 33763392.

The previous prime is 68393113. The next prime is 68393147. The reversal of 68393144 is 44139386.

It is a junction number, because it is equal to n+sod(n) for n = 68393098 and 68393107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68393147) 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 3 ways as a sum of consecutive naturals, for example, 53477 + ... + 54740.

It is an arithmetic number, because the mean of its divisors is an integer number (8116350).

Almost surely, 2^68393144 is an apocalyptic number.

It is an amenable number.

68393144 is a deficient number, since it is larger than the sum of its proper divisors (61468456).

68393144 is a wasteful number, since it uses less digits than its factorization.

68393144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108302 (or 108298 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 68393144 is about 8270.0147521029. The cubic root of 68393144 is about 408.9506060791.

The spelling of 68393144 in words is "sixty-eight million, three hundred ninety-three thousand, one hundred forty-four".