68487684 has 12 divisors (see below), whose sum is σ = 159804624. Its totient is φ = 22829224.

The previous prime is 68487667. The next prime is 68487697. The reversal of 68487684 is 48678486.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2853642 + ... + 2853665.

It is an arithmetic number, because the mean of its divisors is an integer number (13317052).

Almost surely, 2^68487684 is an apocalyptic number.

It is an amenable number.

68487684 is an abundant number, since it is smaller than the sum of its proper divisors (91316940).

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

68487684 is a wasteful number, since it uses less digits than its factorization.

68487684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707314 (or 5707312 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The square root of 68487684 is about 8275.7286084066. The cubic root of 68487684 is about 409.1389504434.

The spelling of 68487684 in words is "sixty-eight million, four hundred eighty-seven thousand, six hundred eighty-four".