6617887 has 4 divisors (see below), whose sum is σ = 6846120. Its totient is φ = 6389656.

The previous prime is 6617873. The next prime is 6617893. The reversal of 6617887 is 7887166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6617887 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 (6617827) 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, 114073 + ... + 114130.

It is an arithmetic number, because the mean of its divisors is an integer number (1711530).

Almost surely, 2^6617887 is an apocalyptic number.

6617887 is a deficient number, since it is larger than the sum of its proper divisors (228233).

6617887 is a wasteful number, since it uses less digits than its factorization.

6617887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228232.

The product of its digits is 112896, while the sum is 43.

The square root of 6617887 is about 2572.5254128968. The cubic root of 6617887 is about 187.7470473879.

The spelling of 6617887 in words is "six million, six hundred seventeen thousand, eight hundred eighty-seven".