258665465 has 8 divisors (see below), whose sum is σ = 312258240. Its totient is φ = 205692592.

The previous prime is 258665441. The next prime is 258665479. The reversal of 258665465 is 564566852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258665465 - 2⁶ = 258665401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154055 + ... + 155724.

It is an arithmetic number, because the mean of its divisors is an integer number (39032280).

Almost surely, 2^258665465 is an apocalyptic number.

It is an amenable number.

258665465 is a deficient number, since it is larger than the sum of its proper divisors (53592775).

258665465 is a wasteful number, since it uses less digits than its factorization.

258665465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309951.

The product of its digits is 1728000, while the sum is 47.

The square root of 258665465 is about 16083.0800843620. The cubic root of 258665465 is about 637.1565465110.

The spelling of 258665465 in words is "two hundred fifty-eight million, six hundred sixty-five thousand, four hundred sixty-five".