68988836 has 12 divisors (see below), whose sum is σ = 137977728. Its totient is φ = 29566632.

The previous prime is 68988827. The next prime is 68988847. The reversal of 68988836 is 63888986.

68988836 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231916 + ... + 1231971.

It is an arithmetic number, because the mean of its divisors is an integer number (11498144).

Almost surely, 2^68988836 is an apocalyptic number.

It is an amenable number.

68988836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68988836 is a wasteful number, since it uses less digits than its factorization.

68988836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463898 (or 2463896 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The square root of 68988836 is about 8305.9518419023. The cubic root of 68988836 is about 410.1344710611.

The spelling of 68988836 in words is "sixty-eight million, nine hundred eighty-eight thousand, eight hundred thirty-six".