613320163 has 4 divisors (see below), whose sum is σ = 623715480. Its totient is φ = 602924848.

The previous prime is 613320157. The next prime is 613320167. The reversal of 613320163 is 361023316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613320163 - 2¹³ = 613311971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613320167) 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, 5197570 + ... + 5197687.

It is an arithmetic number, because the mean of its divisors is an integer number (155928870).

Almost surely, 2^613320163 is an apocalyptic number.

613320163 is a deficient number, since it is larger than the sum of its proper divisors (10395317).

613320163 is a wasteful number, since it uses less digits than its factorization.

613320163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10395316.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 613320163 is about 24765.3015931565. The cubic root of 613320163 is about 849.6285172562.

Adding to 613320163 its reverse (361023316), we get a palindrome (974343479).

The spelling of 613320163 in words is "six hundred thirteen million, three hundred twenty thousand, one hundred sixty-three".