658591 has 2 divisors, whose sum is σ = 658592. Its totient is φ = 658590.

The previous prime is 658589. The next prime is 658601. The reversal of 658591 is 195856.

658591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 658591 - 2¹ = 658589 is a prime.

Together with 658589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (658391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329295 + 329296.

It is an arithmetic number, because the mean of its divisors is an integer number (329296).

2⁶⁵⁸⁵⁹¹ is an apocalyptic number.

658591 is a deficient number, since it is larger than the sum of its proper divisors (1).

658591 is an equidigital number, since it uses as much as digits as its factorization.

658591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 658591 is about 811.5361975907. The cubic root of 658591 is about 87.0038752843.

The spelling of 658591 in words is "six hundred fifty-eight thousand, five hundred ninety-one".