67688089 has 16 divisors (see below), whose sum is σ = 83422080. Its totient is φ = 53619840.

The previous prime is 67688087. The next prime is 67688099. The reversal of 67688089 is 98088676.

It is a cyclic number.

It is not a de Polignac number, because 67688089 - 2¹ = 67688087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67688083) 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 15 ways as a sum of consecutive naturals, for example, 754 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (5213880).

Almost surely, 2^67688089 is an apocalyptic number.

It is an amenable number.

67688089 is a deficient number, since it is larger than the sum of its proper divisors (15733991).

67688089 is a wasteful number, since it uses less digits than its factorization.

67688089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12480.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 67688089 is about 8227.2771315910. The cubic root of 67688089 is about 407.5404784962.

The spelling of 67688089 in words is "sixty-seven million, six hundred eighty-eight thousand, eighty-nine".