6198813 has 6 divisors (see below), whose sum is σ = 8953854. Its totient is φ = 4132536.

The previous prime is 6198809. The next prime is 6198817. The reversal of 6198813 is 3188916.

It is an interprime number because it is at equal distance from previous prime (6198809) and next prime (6198817).

It can be written as a sum of positive squares in only one way, i.e., 3755844 + 2442969 = 1938^2 + 1563^2 .

It is not a de Polignac number, because 6198813 - 2² = 6198809 is a prime.

6198813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6198817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 344370 + ... + 344387.

It is an arithmetic number, because the mean of its divisors is an integer number (1492309).

Almost surely, 2^6198813 is an apocalyptic number.

It is an amenable number.

6198813 is a deficient number, since it is larger than the sum of its proper divisors (2755041).

6198813 is a wasteful number, since it uses less digits than its factorization.

6198813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688763 (or 688760 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 6198813 is about 2489.7415528524. The cubic root of 6198813 is about 183.6973304549.

It can be divided in two parts, 61988 and 13, that added together give a square (62001 = 249²).

The spelling of 6198813 in words is "six million, one hundred ninety-eight thousand, eight hundred thirteen".