613323021 has 8 divisors (see below), whose sum is σ = 860804320. Its totient is φ = 387361872.

The previous prime is 613323019. The next prime is 613323023. The reversal of 613323021 is 120323316.

It is an interprime number because it is at equal distance from previous prime (613323019) and next prime (613323023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 613323021 - 2¹ = 613323019 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 (613323023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5379970 + ... + 5380083.

It is an arithmetic number, because the mean of its divisors is an integer number (107600540).

Almost surely, 2^613323021 is an apocalyptic number.

It is an amenable number.

613323021 is a deficient number, since it is larger than the sum of its proper divisors (247481299).

613323021 is a wasteful number, since it uses less digits than its factorization.

613323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760075.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 613323021 is about 24765.3592947892. The cubic root of 613323021 is about 849.6298369772.

Adding to 613323021 its reverse (120323316), we get a palindrome (733646337).

The spelling of 613323021 in words is "six hundred thirteen million, three hundred twenty-three thousand, twenty-one".