5991617 has 8 divisors (see below), whose sum is σ = 6170472. Its totient is φ = 5814400.

The previous prime is 5991589. The next prime is 5991641. The reversal of 5991617 is 7161995.

It can be written as a sum of positive squares in 4 ways, for example, as 379456 + 5612161 = 616^2 + 2369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5991617 - 2⁶ = 5991553 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 (5991677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12767 + ... + 13227.

It is an arithmetic number, because the mean of its divisors is an integer number (771309).

Almost surely, 2^5991617 is an apocalyptic number.

It is an amenable number.

5991617 is a deficient number, since it is larger than the sum of its proper divisors (178855).

5991617 is a wasteful number, since it uses less digits than its factorization.

5991617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its digits is 17010, while the sum is 38.

The square root of 5991617 is about 2447.7779719574. Note that the first 3 decimals coincide. The cubic root of 5991617 is about 181.6273924957.

The spelling of 5991617 in words is "five million, nine hundred ninety-one thousand, six hundred seventeen".