6616913 has 4 divisors (see below), whose sum is σ = 6632100. Its totient is φ = 6601728.

The previous prime is 6616879. The next prime is 6616931. The reversal of 6616913 is 3196166.

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 4892944 + 1723969 = 2212^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 6616913 - 2⁸ = 6616657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6616913.

It is not an unprimeable number, because it can be changed into a prime (6616993) 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, 6920 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (1658025).

Almost surely, 2^6616913 is an apocalyptic number.

It is an amenable number.

6616913 is a deficient number, since it is larger than the sum of its proper divisors (15187).

6616913 is a wasteful number, since it uses less digits than its factorization.

6616913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15186.

The product of its digits is 5832, while the sum is 32.

The square root of 6616913 is about 2572.3360977913. The cubic root of 6616913 is about 187.7378362607.

The spelling of 6616913 in words is "six million, six hundred sixteen thousand, nine hundred thirteen".