68919908 has 12 divisors (see below), whose sum is σ = 120922620. Its totient is φ = 34370592.

The previous prime is 68919901. The next prime is 68919919. The reversal of 68919908 is 80991986.

It can be written as a sum of positive squares in 2 ways, for example, as 39413284 + 29506624 = 6278^2 + 5432^2 .

It is not an unprimeable number, because it can be changed into a prime (68919901) 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 3 ways as a sum of consecutive naturals, for example, 20591 + ... + 23702.

It is an arithmetic number, because the mean of its divisors is an integer number (10076885).

Almost surely, 2^68919908 is an apocalyptic number.

It is an amenable number.

68919908 is a deficient number, since it is larger than the sum of its proper divisors (52002712).

68919908 is a wasteful number, since it uses less digits than its factorization.

68919908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44686 (or 44684 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 68919908 is about 8301.8014912427. The cubic root of 68919908 is about 409.9978346108.

The spelling of 68919908 in words is "sixty-eight million, nine hundred nineteen thousand, nine hundred eight".