68945644 has 12 divisors (see below), whose sum is σ = 124815600. Its totient is φ = 33284048.

The previous prime is 68945627. The next prime is 68945687. The reversal of 68945644 is 44654986.

It is a junction number, because it is equal to n+sod(n) for n = 68945594 and 68945603.

It is an unprimeable number.

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, 297064 + ... + 297295.

It is an arithmetic number, because the mean of its divisors is an integer number (10401300).

Almost surely, 2^68945644 is an apocalyptic number.

It is an amenable number.

68945644 is a deficient number, since it is larger than the sum of its proper divisors (55869956).

68945644 is a wasteful number, since it uses less digits than its factorization.

68945644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594392 (or 594390 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 68945644 is about 8303.3513715848. The cubic root of 68945644 is about 410.0488619141.

The spelling of 68945644 in words is "sixty-eight million, nine hundred forty-five thousand, six hundred forty-four".