258666068 has 6 divisors (see below), whose sum is σ = 452665626. Its totient is φ = 129333032.

The previous prime is 258666059. The next prime is 258666091. The reversal of 258666068 is 860666852.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 258630724 + 35344 = 16082^2 + 188^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32333255 + ... + 32333262.

It is an arithmetic number, because the mean of its divisors is an integer number (75444271).

Almost surely, 2^258666068 is an apocalyptic number.

It is an amenable number.

258666068 is a deficient number, since it is larger than the sum of its proper divisors (193999558).

258666068 is a wasteful number, since it uses less digits than its factorization.

258666068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64666521 (or 64666519 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 258666068 is about 16083.0988307602. The cubic root of 258666068 is about 637.1570416230.

The spelling of 258666068 in words is "two hundred fifty-eight million, six hundred sixty-six thousand, sixty-eight".