6617387 has 4 divisors (see below), whose sum is σ = 7562736. Its totient is φ = 5672040.

The previous prime is 6617383. The next prime is 6617407. The reversal of 6617387 is 7837166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7837166 = 2 ⋅3918583.

It is a cyclic number.

It is not a de Polignac number, because 6617387 - 2² = 6617383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6617387.

It is not an unprimeable number, because it can be changed into a prime (6617383) 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, 472664 + ... + 472677.

It is an arithmetic number, because the mean of its divisors is an integer number (1890684).

Almost surely, 2^6617387 is an apocalyptic number.

6617387 is a deficient number, since it is larger than the sum of its proper divisors (945349).

6617387 is an equidigital number, since it uses as much as digits as its factorization.

6617387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945348.

The product of its digits is 42336, while the sum is 38.

The square root of 6617387 is about 2572.4282302914. The cubic root of 6617387 is about 187.7423189961.

The spelling of 6617387 in words is "six million, six hundred seventeen thousand, three hundred eighty-seven".