8109613 has 4 divisors (see below), whose sum is σ = 8230720. Its totient is φ = 7988508.

The previous prime is 8109581. The next prime is 8109617. The reversal of 8109613 is 3169018.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3169018 = 2 ⋅1584509.

It is a cyclic number.

It is not a de Polignac number, because 8109613 - 2⁵ = 8109581 is a prime.

It is a Duffinian number.

8109613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109617) 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, 60453 + ... + 60586.

It is an arithmetic number, because the mean of its divisors is an integer number (2057680).

Almost surely, 2^8109613 is an apocalyptic number.

It is an amenable number.

8109613 is a deficient number, since it is larger than the sum of its proper divisors (121107).

8109613 is a wasteful number, since it uses less digits than its factorization.

8109613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121106.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 8109613 is about 2847.7382253290. The cubic root of 8109613 is about 200.9093012575.

The spelling of 8109613 in words is "eight million, one hundred nine thousand, six hundred thirteen".