6617491 has 12 divisors (see below), whose sum is σ = 7296912. Its totient is φ = 5989104.

The previous prime is 6617489. The next prime is 6617497. The reversal of 6617491 is 1947166.

It is not a de Polignac number, because 6617491 - 2¹ = 6617489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6617497) 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 11 ways as a sum of consecutive naturals, for example, 7905 + ... + 8701.

It is an arithmetic number, because the mean of its divisors is an integer number (608076).

Almost surely, 2^6617491 is an apocalyptic number.

6617491 is a deficient number, since it is larger than the sum of its proper divisors (679421).

6617491 is a wasteful number, since it uses less digits than its factorization.

6617491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 839 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 6617491 is about 2572.4484445757. The cubic root of 6617491 is about 187.7433025212.

The spelling of 6617491 in words is "six million, six hundred seventeen thousand, four hundred ninety-one".