258740065 has 8 divisors (see below), whose sum is σ = 312859008. Its totient is φ = 205411440.

The previous prime is 258740039. The next prime is 258740077. The reversal of 258740065 is 560047852.

It is a happy number.

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

It is not a de Polignac number, because 258740065 - 2⁵ = 258740033 is a prime.

It is a Duffinian number.

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, 196857 + ... + 198166.

It is an arithmetic number, because the mean of its divisors is an integer number (39107376).

Almost surely, 2^258740065 is an apocalyptic number.

It is an amenable number.

258740065 is a deficient number, since it is larger than the sum of its proper divisors (54118943).

258740065 is a wasteful number, since it uses less digits than its factorization.

258740065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395159.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 258740065 is about 16085.3991246720. The cubic root of 258740065 is about 637.2177933286.

The spelling of 258740065 in words is "two hundred fifty-eight million, seven hundred forty thousand, sixty-five".