67089427 has 4 divisors (see below), whose sum is σ = 67258816. Its totient is φ = 66920040.

The previous prime is 67089377. The next prime is 67089461. The reversal of 67089427 is 72498076.

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

It is a cyclic number.

It is not a de Polignac number, because 67089427 - 2⁷ = 67089299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67089527) 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, 84099 + ... + 84892.

It is an arithmetic number, because the mean of its divisors is an integer number (16814704).

Almost surely, 2^67089427 is an apocalyptic number.

67089427 is a deficient number, since it is larger than the sum of its proper divisors (169389).

67089427 is a wasteful number, since it uses less digits than its factorization.

67089427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169388.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 67089427 is about 8190.8135737544. The cubic root of 67089427 is about 406.3354322261.

The spelling of 67089427 in words is "sixty-seven million, eighty-nine thousand, four hundred twenty-seven".