6617287 has 4 divisors (see below), whose sum is σ = 6629040. Its totient is φ = 6605536.

The previous prime is 6617257. The next prime is 6617293. The reversal of 6617287 is 7827166.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7827166 = 2 ⋅3913583.

It is a cyclic number.

It is not a de Polignac number, because 6617287 - 2⁷ = 6617159 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 (6617257) 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, 4987 + ... + 6172.

It is an arithmetic number, because the mean of its divisors is an integer number (1657260).

Almost surely, 2^6617287 is an apocalyptic number.

6617287 is a deficient number, since it is larger than the sum of its proper divisors (11753).

6617287 is a wasteful number, since it uses less digits than its factorization.

6617287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11752.

The product of its digits is 28224, while the sum is 37.

The square root of 6617287 is about 2572.4087933297. The cubic root of 6617287 is about 187.7413732891.

The spelling of 6617287 in words is "six million, six hundred seventeen thousand, two hundred eighty-seven".