613423261 has 4 divisors (see below), whose sum is σ = 669189024. Its totient is φ = 557657500.

The previous prime is 613423253. The next prime is 613423289. The reversal of 613423261 is 162324316.

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.

It is a cyclic number.

It is not a de Polignac number, because 613423261 - 2³ = 613423253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613423241) 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, 27882865 + ... + 27882886.

It is an arithmetic number, because the mean of its divisors is an integer number (167297256).

Almost surely, 2^613423261 is an apocalyptic number.

It is an amenable number.

613423261 is a deficient number, since it is larger than the sum of its proper divisors (55765763).

613423261 is a wasteful number, since it uses less digits than its factorization.

613423261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55765762.

The product of its digits is 5184, while the sum is 28.

The square root of 613423261 is about 24767.3830066885. The cubic root of 613423261 is about 849.6761215899.

Adding to 613423261 its reverse (162324316), we get a palindrome (775747577).

The spelling of 613423261 in words is "six hundred thirteen million, four hundred twenty-three thousand, two hundred sixty-one".