258617213 has 4 divisors (see below), whose sum is σ = 258688188. Its totient is φ = 258546240.

The previous prime is 258617207. The next prime is 258617239. The reversal of 258617213 is 312716852.

It is a happy number.

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 210772324 + 47844889 = 14518^2 + 6917^2 .

It is a cyclic number.

It is not a de Polignac number, because 258617213 - 2⁸ = 258616957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258619213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29708 + ... + 37413.

It is an arithmetic number, because the mean of its divisors is an integer number (64672047).

Almost surely, 2^258617213 is an apocalyptic number.

It is an amenable number.

258617213 is a deficient number, since it is larger than the sum of its proper divisors (70975).

258617213 is an equidigital number, since it uses as much as digits as its factorization.

258617213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70974.

The product of its digits is 20160, while the sum is 35.

The square root of 258617213 is about 16081.5799286015. The cubic root of 258617213 is about 637.1169252063.

The spelling of 258617213 in words is "two hundred fifty-eight million, six hundred seventeen thousand, two hundred thirteen".