258616741 has 2 divisors, whose sum is σ = 258616742. Its totient is φ = 258616740.

The previous prime is 258616739. The next prime is 258616777. The reversal of 258616741 is 147616852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 106193025 = 12346^2 + 10305^2 .

It is a cyclic number.

It is not a de Polignac number, because 258616741 - 2¹ = 258616739 is a prime.

It is a super-2 number, since 2×258616741² = 133765237450922162, which contains 22 as substring.

Together with 258616739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 258616694 and 258616703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258616711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129308370 + 129308371.

It is an arithmetic number, because the mean of its divisors is an integer number (129308371).

Almost surely, 2^258616741 is an apocalyptic number.

It is an amenable number.

258616741 is a deficient number, since it is larger than the sum of its proper divisors (1).

258616741 is an equidigital number, since it uses as much as digits as its factorization.

258616741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 258616741 is about 16081.5652534198. The cubic root of 258616741 is about 637.1165376073.

The spelling of 258616741 in words is "two hundred fifty-eight million, six hundred sixteen thousand, seven hundred forty-one".