613609009 has 32 divisors (see below), whose sum is σ = 724828160. Its totient is φ = 514382400.

The previous prime is 613609001. The next prime is 613609049. The reversal of 613609009 is 900906316.

It is a cyclic number.

It is not a de Polignac number, because 613609009 - 2³ = 613609001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613609001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 972124 + ... + 972754.

It is an arithmetic number, because the mean of its divisors is an integer number (22650880).

Almost surely, 2^613609009 is an apocalyptic number.

It is an amenable number.

613609009 is a deficient number, since it is larger than the sum of its proper divisors (111219151).

613609009 is a wasteful number, since it uses less digits than its factorization.

613609009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 613609009 is about 24771.1325740266. The cubic root of 613609009 is about 849.7618751648.

The spelling of 613609009 in words is "six hundred thirteen million, six hundred nine thousand, nine".