258023669 has 2 divisors, whose sum is σ = 258023670. Its totient is φ = 258023668.

The previous prime is 258023659. The next prime is 258023719. The reversal of 258023669 is 966320852.

258023669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199883044 + 58140625 = 14138^2 + 7625^2 .

It is a cyclic number.

It is not a de Polignac number, because 258023669 - 2⁸ = 258023413 is a prime.

It is a super-2 number, since 2×258023669² = 133152427528443122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258023659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129011834 + 129011835.

It is an arithmetic number, because the mean of its divisors is an integer number (129011835).

Almost surely, 2^258023669 is an apocalyptic number.

It is an amenable number.

258023669 is a deficient number, since it is larger than the sum of its proper divisors (1).

258023669 is an equidigital number, since it uses as much as digits as its factorization.

258023669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 258023669 is about 16063.1151710993. The cubic root of 258023669 is about 636.6291430361.

The spelling of 258023669 in words is "two hundred fifty-eight million, twenty-three thousand, six hundred sixty-nine".