6616613 has 4 divisors (see below), whose sum is σ = 6757440. Its totient is φ = 6475788.

The previous prime is 6616607. The next prime is 6616637. The reversal of 6616613 is 3166166.

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 6616613 - 2⁶ = 6616549 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 (6616513) 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, 70343 + ... + 70436.

It is an arithmetic number, because the mean of its divisors is an integer number (1689360).

Almost surely, 2^6616613 is an apocalyptic number.

It is an amenable number.

6616613 is a deficient number, since it is larger than the sum of its proper divisors (140827).

6616613 is a wasteful number, since it uses less digits than its factorization.

6616613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140826.

The product of its digits is 3888, while the sum is 29.

The square root of 6616613 is about 2572.2777843771. The cubic root of 6616613 is about 187.7349989758.

The spelling of 6616613 in words is "six million, six hundred sixteen thousand, six hundred thirteen".