138585585 has 8 divisors (see below), whose sum is σ = 221736960. Its totient is φ = 73912304.

The previous prime is 138585571. The next prime is 138585607. The reversal of 138585585 is 585585831.

It is a happy number.

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 138585585 - 2¹² = 138581489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4619505 + ... + 4619534.

It is an arithmetic number, because the mean of its divisors is an integer number (27717120).

Almost surely, 2^138585585 is an apocalyptic number.

138585585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138585585 is a deficient number, since it is larger than the sum of its proper divisors (83151375).

138585585 is an equidigital number, since it uses as much as digits as its factorization.

138585585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9239047.

The product of its digits is 960000, while the sum is 48.

The square root of 138585585 is about 11772.2378926014. The cubic root of 138585585 is about 517.4948353005.

The spelling of 138585585 in words is "one hundred thirty-eight million, five hundred eighty-five thousand, five hundred eighty-five".