5991649 has 8 divisors (see below), whose sum is σ = 6213888. Its totient is φ = 5771280.

The previous prime is 5991641. The next prime is 5991653. The reversal of 5991649 is 9461995.

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 5991649 - 2³ = 5991641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5991641) 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 7 ways as a sum of consecutive naturals, for example, 10479 + ... + 11035.

It is an arithmetic number, because the mean of its divisors is an integer number (776736).

Almost surely, 2^5991649 is an apocalyptic number.

It is an amenable number.

5991649 is a deficient number, since it is larger than the sum of its proper divisors (222239).

5991649 is a wasteful number, since it uses less digits than its factorization.

5991649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935.

The product of its digits is 87480, while the sum is 43.

The square root of 5991649 is about 2447.7845084893. The cubic root of 5991649 is about 181.6277158400.

The spelling of 5991649 in words is "five million, nine hundred ninety-one thousand, six hundred forty-nine".