68987188 has 12 divisors (see below), whose sum is σ = 120793792. Its totient is φ = 34474680.

The previous prime is 68987161. The next prime is 68987239. The reversal of 68987188 is 88178986.

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 3 ways as a sum of consecutive naturals, for example, 6373 + ... + 13363.

Almost surely, 2^68987188 is an apocalyptic number.

It is an amenable number.

68987188 is a deficient number, since it is larger than the sum of its proper divisors (51806604).

68987188 is a wasteful number, since it uses less digits than its factorization.

68987188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462 (or 9460 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 55.

The square root of 68987188 is about 8305.8526353409. The cubic root of 68987188 is about 410.1312052816.

The spelling of 68987188 in words is "sixty-eight million, nine hundred eighty-seven thousand, one hundred eighty-eight".