258668613 has 16 divisors (see below), whose sum is σ = 437957760. Its totient is φ = 147810528.

The previous prime is 258668581. The next prime is 258668623. The reversal of 258668613 is 316866852.

258668613 is a `hidden beast` number, since 2 + 586 + 6 + 8 + 61 + 3 = 666.

It is not a de Polignac number, because 258668613 - 2⁵ = 258668581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258668623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684120 + ... + 684497.

It is an arithmetic number, because the mean of its divisors is an integer number (27372360).

Almost surely, 2^258668613 is an apocalyptic number.

It is an amenable number.

258668613 is a deficient number, since it is larger than the sum of its proper divisors (179289147).

258668613 is a wasteful number, since it uses less digits than its factorization.

258668613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368633 (or 1368627 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 258668613 is about 16083.1779508902. The cubic root of 258668613 is about 637.1591312661.

The spelling of 258668613 in words is "two hundred fifty-eight million, six hundred sixty-eight thousand, six hundred thirteen".