5891663 has 2 divisors, whose sum is σ = 5891664. Its totient is φ = 5891662.

The previous prime is 5891629. The next prime is 5891687. The reversal of 5891663 is 3661985.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5891663 - 2⁸ = 5891407 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5891623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2945831 + 2945832.

It is an arithmetic number, because the mean of its divisors is an integer number (2945832).

Almost surely, 2^5891663 is an apocalyptic number.

5891663 is a deficient number, since it is larger than the sum of its proper divisors (1).

5891663 is an equidigital number, since it uses as much as digits as its factorization.

5891663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 5891663 is about 2427.2748093284. The cubic root of 5891663 is about 180.6117355154.

The spelling of 5891663 in words is "five million, eight hundred ninety-one thousand, six hundred sixty-three".