68704668 has 36 divisors (see below), whose sum is σ = 173988360. Its totient is φ = 22859616.

The previous prime is 68704651. The next prime is 68704693. The reversal of 68704668 is 86640786.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22963 + ... + 25781.

It is an arithmetic number, because the mean of its divisors is an integer number (4833010).

Almost surely, 2^68704668 is an apocalyptic number.

It is an amenable number.

68704668 is an abundant number, since it is smaller than the sum of its proper divisors (105283692).

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

68704668 is a wasteful number, since it uses less digits than its factorization.

68704668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 68704668 is about 8288.8279026651. The cubic root of 68704668 is about 409.5705755713.

The spelling of 68704668 in words is "sixty-eight million, seven hundred four thousand, six hundred sixty-eight".