67108856 has 16 divisors (see below), whose sum is σ = 128507040. Its totient is φ = 32840320.

The previous prime is 67108837. The next prime is 67108859. The reversal of 67108856 is 65880176.

It is a nialpdrome in base 2 and base 4.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67108859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88865 + ... + 89616.

It is an arithmetic number, because the mean of its divisors is an integer number (8031690).

Almost surely, 2^67108856 is an apocalyptic number.

It is an amenable number.

67108856 is a deficient number, since it is larger than the sum of its proper divisors (61398184).

67108856 is a wasteful number, since it uses less digits than its factorization.

67108856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178534 (or 178530 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 67108856 is about 8191.9995117187. Note that the first 3 decimals coincide. The cubic root of 67108856 is about 406.3746531560.

The spelling of 67108856 in words is "sixty-seven million, one hundred eight thousand, eight hundred fifty-six".