68956144 has 30 divisors (see below), whose sum is σ = 136575584. Its totient is φ = 33727200.

The previous prime is 68956109. The next prime is 68956163. The reversal of 68956144 is 44165986.

It is a self number, because there is not a number n which added to its sum of digits gives 68956144.

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 5 ways as a sum of consecutive naturals, for example, 34369 + ... + 36319.

Almost surely, 2^68956144 is an apocalyptic number.

It is an amenable number.

68956144 is a deficient number, since it is larger than the sum of its proper divisors (67619440).

68956144 is a wasteful number, since it uses less digits than its factorization.

68956144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2000 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 68956144 is about 8303.9836223345. The cubic root of 68956144 is about 410.0696768356.

The spelling of 68956144 in words is "sixty-eight million, nine hundred fifty-six thousand, one hundred forty-four".