68555808 has 60 divisors (see below), whose sum is σ = 201628350. Its totient is φ = 22851072.

The previous prime is 68555791. The next prime is 68555827. The reversal of 68555808 is 80855586.

68555808 is a `hidden beast` number, since 68 + 5 + 5 + 580 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66781584 + 1774224 = 8172^2 + 1332^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10633 + ... + 15816.

Almost surely, 2^68555808 is an apocalyptic number.

It is an amenable number.

68555808 is an abundant number, since it is smaller than the sum of its proper divisors (133072542).

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

68555808 is a wasteful number, since it uses less digits than its factorization.

68555808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26471 (or 26454 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The square root of 68555808 is about 8279.8434767814. The cubic root of 68555808 is about 409.2745609354.

The spelling of 68555808 in words is "sixty-eight million, five hundred fifty-five thousand, eight hundred eight".