258660009 has 12 divisors (see below), whose sum is σ = 373764352. Its totient is φ = 172373400.

The previous prime is 258659987. The next prime is 258660023. The reversal of 258660009 is 900066852.

It is not a de Polignac number, because 258660009 - 2¹¹ = 258657961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258660079) 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 11 ways as a sum of consecutive naturals, for example, 33504 + ... + 40494.

Almost surely, 2^258660009 is an apocalyptic number.

It is an amenable number.

258660009 is a deficient number, since it is larger than the sum of its proper divisors (115104343).

258660009 is a wasteful number, since it uses less digits than its factorization.

258660009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11108 (or 11105 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 258660009 is about 16082.9104642164. The cubic root of 258660009 is about 637.1520666570.

The spelling of 258660009 in words is "two hundred fifty-eight million, six hundred sixty thousand, nine".