613367321 has 4 divisors (see below), whose sum is σ = 700991232. Its totient is φ = 525743412.

The previous prime is 613367309. The next prime is 613367323. The reversal of 613367321 is 123763316.

613367321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 613367321 - 2²² = 609173017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (613367323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43811945 + ... + 43811958.

It is an arithmetic number, because the mean of its divisors is an integer number (175247808).

Almost surely, 2^613367321 is an apocalyptic number.

It is an amenable number.

613367321 is a deficient number, since it is larger than the sum of its proper divisors (87623911).

613367321 is an equidigital number, since it uses as much as digits as its factorization.

613367321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87623910.

The product of its digits is 13608, while the sum is 32.

The square root of 613367321 is about 24766.2536730932. The cubic root of 613367321 is about 849.6502925905.

The spelling of 613367321 in words is "six hundred thirteen million, three hundred sixty-seven thousand, three hundred twenty-one".