601385009 has 4 divisors (see below), whose sum is σ = 605421300. Its totient is φ = 597348720.

The previous prime is 601385003. The next prime is 601385021. The reversal of 601385009 is 900583106.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156175009 + 445210000 = 12497^2 + 21100^2 .

It is a cyclic number.

It is not a de Polignac number, because 601385009 - 2²⁸ = 332949553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (601385003) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2017922 + ... + 2018219.

It is an arithmetic number, because the mean of its divisors is an integer number (151355325).

Almost surely, 2^601385009 is an apocalyptic number.

It is an amenable number.

601385009 is a deficient number, since it is larger than the sum of its proper divisors (4036291).

601385009 is a wasteful number, since it uses less digits than its factorization.

601385009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036290.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 601385009 is about 24523.1525094144. The cubic root of 601385009 is about 844.0811453805.

The spelling of 601385009 in words is "six hundred one million, three hundred eighty-five thousand, nine".