68261808 has 40 divisors (see below), whose sum is σ = 178067968. Its totient is φ = 22531392.

The previous prime is 68261803. The next prime is 68261819. The reversal of 68261808 is 80816286.

It is not an unprimeable number, because it can be changed into a prime (68261801) 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 7 ways as a sum of consecutive naturals, for example, 1960 + ... + 11847.

Almost surely, 2^68261808 is an apocalyptic number.

It is an amenable number.

68261808 is an abundant number, since it is smaller than the sum of its proper divisors (109806160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68261808 is a wasteful number, since it uses less digits than its factorization.

68261808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921 (or 13915 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 68261808 is about 8262.0704426917. The cubic root of 68261808 is about 408.6886677702.

The spelling of 68261808 in words is "sixty-eight million, two hundred sixty-one thousand, eight hundred eight".