5605993 has 4 divisors (see below), whose sum is σ = 5622228. Its totient is φ = 5589760.

The previous prime is 5605991. The next prime is 5606011. The reversal of 5605993 is 3995065.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3988009 + 1617984 = 1997^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 5605993 - 2¹ = 5605991 is a prime.

It is a Duffinian number.

5605993 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5605991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7588 + ... + 8293.

It is an arithmetic number, because the mean of its divisors is an integer number (1405557).

Almost surely, 2^5605993 is an apocalyptic number.

It is an amenable number.

5605993 is a deficient number, since it is larger than the sum of its proper divisors (16235).

5605993 is a wasteful number, since it uses less digits than its factorization.

5605993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16234.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 5605993 is about 2367.6978270041. The cubic root of 5605993 is about 177.6441254866.

The spelling of 5605993 in words is "five million, six hundred five thousand, nine hundred ninety-three".