8061813 has 6 divisors (see below), whose sum is σ = 11644854. Its totient is φ = 5374536.

The previous prime is 8061787. The next prime is 8061839. The reversal of 8061813 is 3181608.

It is an interprime number because it is at equal distance from previous prime (8061787) and next prime (8061839).

It can be written as a sum of positive squares in only one way, i.e., 8054244 + 7569 = 2838^2 + 87^2 .

It is not a de Polignac number, because 8061813 - 2¹³ = 8053621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8061013) 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, 447870 + ... + 447887.

It is an arithmetic number, because the mean of its divisors is an integer number (1940809).

Almost surely, 2^8061813 is an apocalyptic number.

It is an amenable number.

8061813 is a deficient number, since it is larger than the sum of its proper divisors (3583041).

8061813 is a wasteful number, since it uses less digits than its factorization.

8061813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895763 (or 895760 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8061813 is about 2839.3331963685. Note that the first 3 decimals coincide. The cubic root of 8061813 is about 200.5137873161.

The spelling of 8061813 in words is "eight million, sixty-one thousand, eight hundred thirteen".