67427005 has 8 divisors (see below), whose sum is σ = 80959032. Its totient is φ = 53910528.

The previous prime is 67426969. The next prime is 67427027. The reversal of 67427005 is 50072476.

It can be written as a sum of positive squares in 4 ways, for example, as 28164249 + 39262756 = 5307^2 + 6266^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67427005 - 2²¹ = 65329853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10509 + ... + 15661.

It is an arithmetic number, because the mean of its divisors is an integer number (10119879).

Almost surely, 2^67427005 is an apocalyptic number.

It is an amenable number.

67427005 is a deficient number, since it is larger than the sum of its proper divisors (13532027).

67427005 is a wasteful number, since it uses less digits than its factorization.

67427005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 67427005 is about 8211.3948267027. The cubic root of 67427005 is about 407.0158199857.

The spelling of 67427005 in words is "sixty-seven million, four hundred twenty-seven thousand, five".