5665993 has 2 divisors, whose sum is σ = 5665994. Its totient is φ = 5665992.

The previous prime is 5665969. The next prime is 5665997. The reversal of 5665993 is 3995665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4338889 + 1327104 = 2083^2 + 1152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665993 is a prime.

It is not a weakly prime, because it can be changed into another prime (5665997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832996 + 2832997.

It is an arithmetic number, because the mean of its divisors is an integer number (2832997).

Almost surely, 2^5665993 is an apocalyptic number.

It is an amenable number.

5665993 is a deficient number, since it is larger than the sum of its proper divisors (1).

5665993 is an equidigital number, since it uses as much as digits as its factorization.

5665993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 218700, while the sum is 43.

The square root of 5665993 is about 2380.3346403395. The cubic root of 5665993 is about 178.2756428721.

It can be divided in two parts, 56 and 65993, that added together give a square (66049 = 257²).

The spelling of 5665993 in words is "five million, six hundred sixty-five thousand, nine hundred ninety-three".