8140613 has 4 divisors (see below), whose sum is σ = 8766828. Its totient is φ = 7514400.

The previous prime is 8140609. The next prime is 8140651. The reversal of 8140613 is 3160418.

8140613 = 2017² + 2018².

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 4072324 + 4068289 = 2018^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 8140613 - 2² = 8140609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140663) 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 3 ways as a sum of consecutive naturals, for example, 313088 + ... + 313113.

It is an arithmetic number, because the mean of its divisors is an integer number (2191707).

Almost surely, 2^8140613 is an apocalyptic number.

8140613 is the 2018-th centered square number.

It is an amenable number.

8140613 is a deficient number, since it is larger than the sum of its proper divisors (626215).

8140613 is a wasteful number, since it uses less digits than its factorization.

8140613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626214.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 8140613 is about 2853.1759497094. The cubic root of 8140613 is about 201.1649759793.

The spelling of 8140613 in words is "eight million, one hundred forty thousand, six hundred thirteen".