68784668 has 24 divisors (see below), whose sum is σ = 123076800. Its totient is φ = 33628608.

The previous prime is 68784647. The next prime is 68784671. The reversal of 68784668 is 86648786.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33446 + ... + 35442.

It is an arithmetic number, because the mean of its divisors is an integer number (5128200).

Almost surely, 2^68784668 is an apocalyptic number.

It is an amenable number.

68784668 is a deficient number, since it is larger than the sum of its proper divisors (54292132).

68784668 is a wasteful number, since it uses less digits than its factorization.

68784668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The square root of 68784668 is about 8293.6522714664. The cubic root of 68784668 is about 409.7294824682.

The spelling of 68784668 in words is "sixty-eight million, seven hundred eighty-four thousand, six hundred sixty-eight".