6617997 has 16 divisors (see below), whose sum is σ = 10231680. Its totient is φ = 4219776.

The previous prime is 6617993. The next prime is 6618013. The reversal of 6617997 is 7997166.

It is not a de Polignac number, because 6617997 - 2² = 6617993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6617993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4708 + ... + 5949.

It is an arithmetic number, because the mean of its divisors is an integer number (639480).

Almost surely, 2^6617997 is an apocalyptic number.

It is an amenable number.

6617997 is a deficient number, since it is larger than the sum of its proper divisors (3613683).

6617997 is a wasteful number, since it uses less digits than its factorization.

6617997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689 (or 10683 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 6617997 is about 2572.5467925773. The cubic root of 6617997 is about 187.7480876021.

The spelling of 6617997 in words is "six million, six hundred seventeen thousand, nine hundred ninety-seven".