258639641 has 8 divisors (see below), whose sum is σ = 278664960. Its totient is φ = 238632912.

The previous prime is 258639617. The next prime is 258639653. The reversal of 258639641 is 146936852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258639641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258639592 and 258639601.

It is not an unprimeable number, because it can be changed into a prime (258639611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40706 + ... + 46628.

It is an arithmetic number, because the mean of its divisors is an integer number (34833120).

Almost surely, 2^258639641 is an apocalyptic number.

It is an amenable number.

258639641 is a deficient number, since it is larger than the sum of its proper divisors (20025319).

258639641 is a wasteful number, since it uses less digits than its factorization.

258639641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9295.

The product of its digits is 311040, while the sum is 44.

The square root of 258639641 is about 16082.2772330289. The cubic root of 258639641 is about 637.1353421879.

The spelling of 258639641 in words is "two hundred fifty-eight million, six hundred thirty-nine thousand, six hundred forty-one".