258672017 has 4 divisors (see below), whose sum is σ = 273888036. Its totient is φ = 243456000.

The previous prime is 258671981. The next prime is 258672019. The reversal of 258672017 is 710276852.

258672017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179533201 + 79138816 = 13399^2 + 8896^2 .

It is a cyclic number.

It is not a de Polignac number, because 258672017 - 2⁶ = 258671953 is a prime.

It is a super-2 number, since 2×258672017² = 133822424757696578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258672019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7607984 + ... + 7608017.

It is an arithmetic number, because the mean of its divisors is an integer number (68472009).

Almost surely, 2^258672017 is an apocalyptic number.

It is an amenable number.

258672017 is a deficient number, since it is larger than the sum of its proper divisors (15216019).

258672017 is a wasteful number, since it uses less digits than its factorization.

258672017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15216018.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 258672017 is about 16083.2837753986. The cubic root of 258672017 is about 637.1619261938.

The spelling of 258672017 in words is "two hundred fifty-eight million, six hundred seventy-two thousand, seventeen".