258387065 has 8 divisors (see below), whose sum is σ = 310226760. Its totient is φ = 206601472.

The previous prime is 258387001. The next prime is 258387079. The reversal of 258387065 is 560783852.

It can be written as a sum of positive squares in 4 ways, for example, as 9504889 + 248882176 = 3083^2 + 15776^2 .

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 258387065 - 2⁶ = 258387001 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 2144 + ... + 22833.

It is an arithmetic number, because the mean of its divisors is an integer number (38778345).

Almost surely, 2^258387065 is an apocalyptic number.

It is an amenable number.

258387065 is a deficient number, since it is larger than the sum of its proper divisors (51839695).

258387065 is a wasteful number, since it uses less digits than its factorization.

258387065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27051.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 258387065 is about 16074.4226956989. The cubic root of 258387065 is about 636.9278752684.

The spelling of 258387065 in words is "two hundred fifty-eight million, three hundred eighty-seven thousand, sixty-five".