67585009 has 2 divisors, whose sum is σ = 67585010. Its totient is φ = 67585008.

The previous prime is 67585003. The next prime is 67585043. The reversal of 67585009 is 90058576.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58752225 + 8832784 = 7665^2 + 2972^2 .

It is a cyclic number.

It is not a de Polignac number, because 67585009 - 2⁹ = 67584497 is a prime.

It is not a weakly prime, because it can be changed into another prime (67585003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33792504 + 33792505.

It is an arithmetic number, because the mean of its divisors is an integer number (33792505).

Almost surely, 2^67585009 is an apocalyptic number.

It is an amenable number.

67585009 is a deficient number, since it is larger than the sum of its proper divisors (1).

67585009 is an equidigital number, since it uses as much as digits as its factorization.

67585009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 67585009 is about 8221.0102177287. The cubic root of 67585009 is about 407.3334966571. Note that the first 3 decimals are identical.

The spelling of 67585009 in words is "sixty-seven million, five hundred eighty-five thousand, nine".