613393 has 4 divisors (see below), whose sum is σ = 669168. Its totient is φ = 557620.

The previous prime is 613381. The next prime is 613421. The reversal of 613393 is 393316.

613393 = T₁₀₂ + T₁₀₃ + ... + T₁₆₇.

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 a de Polignac number, because none of the positive numbers 2^k-613393 is a prime.

It is a Duffinian number.

613393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (613363) 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, 27871 + ... + 27892.

It is an arithmetic number, because the mean of its divisors is an integer number (167292).

2⁶¹³³⁹³ is an apocalyptic number.

It is an amenable number.

613393 is a deficient number, since it is larger than the sum of its proper divisors (55775).

613393 is a wasteful number, since it uses less digits than its factorization.

613393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55774.

The product of its digits is 1458, while the sum is 25.

The square root of 613393 is about 783.1941011014. The cubic root of 613393 is about 84.9662149469.

It can be divided in two parts, 6133 and 93, that added together give a palindrome (6226).

The spelling of 613393 in words is "six hundred thirteen thousand, three hundred ninety-three".