6617985 has 32 divisors (see below), whose sum is σ = 12165120. Its totient is φ = 3038400.

The previous prime is 6617983. The next prime is 6617987. The reversal of 6617985 is 5897166.

6617985 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6617983) and next prime (6617987).

It is not a de Polignac number, because 6617985 - 2¹ = 6617983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6617983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2080 + ... + 4190.

It is an arithmetic number, because the mean of its divisors is an integer number (380160).

Almost surely, 2^6617985 is an apocalyptic number.

It is an amenable number.

6617985 is a deficient number, since it is larger than the sum of its proper divisors (5547135).

6617985 is a wasteful number, since it uses less digits than its factorization.

6617985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149.

The product of its digits is 90720, while the sum is 42.

The square root of 6617985 is about 2572.5444602572. The cubic root of 6617985 is about 187.7479741248.

It can be divided in two parts, 661 and 7985, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 6617985 in words is "six million, six hundred seventeen thousand, nine hundred eighty-five".