258601643 has 2 divisors, whose sum is σ = 258601644. Its totient is φ = 258601642.

The previous prime is 258601639. The next prime is 258601649. The reversal of 258601643 is 346106852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258601643 - 2² = 258601639 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (258601649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129300821 + 129300822.

It is an arithmetic number, because the mean of its divisors is an integer number (129300822).

Almost surely, 2^258601643 is an apocalyptic number.

258601643 is a deficient number, since it is larger than the sum of its proper divisors (1).

258601643 is an equidigital number, since it uses as much as digits as its factorization.

258601643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 258601643 is about 16081.0958270884. The cubic root of 258601643 is about 637.1041391154.

The spelling of 258601643 in words is "two hundred fifty-eight million, six hundred one thousand, six hundred forty-three".