8691613 has 4 divisors (see below), whose sum is σ = 9933280. Its totient is φ = 7449948.

The previous prime is 8691593. The next prime is 8691623. The reversal of 8691613 is 3161968.

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.

It is a cyclic number.

It is not a de Polignac number, because 8691613 - 2⁵ = 8691581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8691623) 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, 620823 + ... + 620836.

It is an arithmetic number, because the mean of its divisors is an integer number (2483320).

Almost surely, 2^8691613 is an apocalyptic number.

It is an amenable number.

8691613 is a deficient number, since it is larger than the sum of its proper divisors (1241667).

8691613 is a wasteful number, since it uses less digits than its factorization.

8691613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241666.

The product of its digits is 7776, while the sum is 34.

The square root of 8691613 is about 2948.1541682890. The cubic root of 8691613 is about 205.6048998439.

The spelling of 8691613 in words is "eight million, six hundred ninety-one thousand, six hundred thirteen".