67028089 has 4 divisors (see below), whose sum is σ = 67946356. Its totient is φ = 66109824.

The previous prime is 67028083. The next prime is 67028113. The reversal of 67028089 is 98082076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12194064 + 54834025 = 3492^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 67028089 - 2⁵ = 67028057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67028083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459024 + ... + 459169.

It is an arithmetic number, because the mean of its divisors is an integer number (16986589).

Almost surely, 2^67028089 is an apocalyptic number.

It is an amenable number.

67028089 is a deficient number, since it is larger than the sum of its proper divisors (918267).

67028089 is an equidigital number, since it uses as much as digits as its factorization.

67028089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918266.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 67028089 is about 8187.0684008380. The cubic root of 67028089 is about 406.2115607338.

The spelling of 67028089 in words is "sixty-seven million, twenty-eight thousand, eighty-nine".