658943 has 2 divisors, whose sum is σ = 658944. Its totient is φ = 658942.

The previous prime is 658919. The next prime is 658961. The reversal of 658943 is 349856.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 658943 - 2¹⁶ = 593407 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 6³ + 5⁷ + 9 + 8⁵ + 4⁷ + 3¹² .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (658913) 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 as a sum of consecutive naturals, namely, 329471 + 329472.

It is an arithmetic number, because the mean of its divisors is an integer number (329472).

2⁶⁵⁸⁹⁴³ is an apocalyptic number.

658943 is a deficient number, since it is larger than the sum of its proper divisors (1).

658943 is an equidigital number, since it uses as much as digits as its factorization.

658943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 658943 is about 811.7530412632. The cubic root of 658943 is about 87.0193729703.

The spelling of 658943 in words is "six hundred fifty-eight thousand, nine hundred forty-three".