67108736 has 16 divisors (see below), whose sum is σ = 133693440. Its totient is φ = 33554304.

The previous prime is 67108729. The next prime is 67108739. The reversal of 67108736 is 63780176.

It is a tau number, because it is divible by the number of its divisors (16).

It is a nialpdrome in base 2 and base 4.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 67108736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67108739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262016 + ... + 262271.

It is an arithmetic number, because the mean of its divisors is an integer number (8355840).

Almost surely, 2^67108736 is an apocalyptic number.

It is an amenable number.

67108736 is a deficient number, since it is larger than the sum of its proper divisors (66584704).

67108736 is an equidigital number, since it uses as much as digits as its factorization.

67108736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524301 (or 524289 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 67108736 is about 8191.9921874963. The cubic root of 67108736 is about 406.3744109376.

The spelling of 67108736 in words is "sixty-seven million, one hundred eight thousand, seven hundred thirty-six".