6113813 has 4 divisors (see below), whose sum is σ = 6176940. Its totient is φ = 6050688.

The previous prime is 6113803. The next prime is 6113827. The reversal of 6113813 is 3183116.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4656964 + 1456849 = 2158^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 6113813 - 2¹⁰ = 6112789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6113803) 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, 31418 + ... + 31611.

It is an arithmetic number, because the mean of its divisors is an integer number (1544235).

Almost surely, 2^6113813 is an apocalyptic number.

It is an amenable number.

6113813 is a deficient number, since it is larger than the sum of its proper divisors (63127).

6113813 is an equidigital number, since it uses as much as digits as its factorization.

6113813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63126.

The product of its digits is 432, while the sum is 23.

The square root of 6113813 is about 2472.6125859099. The cubic root of 6113813 is about 182.8538253618.

Adding to 6113813 its reverse (3183116), we get a palindrome (9296929).

The spelling of 6113813 in words is "six million, one hundred thirteen thousand, eight hundred thirteen".