609013 has 4 divisors (see below), whose sum is σ = 611968. Its totient is φ = 606060.
The previous prime is 608999. The next prime is 609043. The reversal of 609013 is 310906.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310906 = 2 ⋅155453.
It is a cyclic number.
It is not a de Polignac number, because 609013 - 217 = 477941 is a prime.
It is a Duffinian number.
609013 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (609043) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143 + ... + 1588.
It is an arithmetic number, because the mean of its divisors is an integer number (152992).
2609013 is an apocalyptic number.
It is an amenable number.
609013 is a deficient number, since it is larger than the sum of its proper divisors (2955).
609013 is a wasteful number, since it uses less digits than its factorization.
609013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2954.
The product of its (nonzero) digits is 162, while the sum is 19.
The square root of 609013 is about 780.3928497878. The cubic root of 609013 is about 84.7634948041.
Adding to 609013 its reverse (310906), we get a palindrome (919919).
The spelling of 609013 in words is "six hundred nine thousand, thirteen".
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