613006605 has 24 divisors (see below), whose sum is σ = 1063216440. Its totient is φ = 326730240.

The previous prime is 613006601. The next prime is 613006609. The reversal of 613006605 is 506600316.

It is an interprime number because it is at equal distance from previous prime (613006601) and next prime (613006609).

It can be written as a sum of positive squares in 4 ways, for example, as 312122889 + 300883716 = 17667^2 + 17346^2 .

It is not a de Polignac number, because 613006605 - 2² = 613006601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613006601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90745 + ... + 97265.

It is an arithmetic number, because the mean of its divisors is an integer number (44300685).

Almost surely, 2^613006605 is an apocalyptic number.

It is an amenable number.

613006605 is a deficient number, since it is larger than the sum of its proper divisors (450209835).

613006605 is a wasteful number, since it uses less digits than its factorization.

613006605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8621 (or 8618 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 613006605 is about 24758.9701926393. The cubic root of 613006605 is about 849.4837026076.

The spelling of 613006605 in words is "six hundred thirteen million, six thousand, six hundred five".