68156808 has 32 divisors (see below), whose sum is σ = 180416160. Its totient is φ = 21382400.

The previous prime is 68156807. The next prime is 68156813. The reversal of 68156808 is 80865186.

It is a self number, because there is not a number n which added to its sum of digits gives 68156808.

It is not an unprimeable number, because it can be changed into a prime (68156807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83118 + ... + 83933.

It is an arithmetic number, because the mean of its divisors is an integer number (5638005).

Almost surely, 2^68156808 is an apocalyptic number.

68156808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68156808 is an abundant number, since it is smaller than the sum of its proper divisors (112259352).

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

68156808 is a wasteful number, since it uses less digits than its factorization.

68156808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167077 (or 167073 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 68156808 is about 8255.7136578251. The cubic root of 68156808 is about 408.4790125584.

The spelling of 68156808 in words is "sixty-eight million, one hundred fifty-six thousand, eight hundred eight".