259027643 has 4 divisors (see below), whose sum is σ = 296031600. Its totient is φ = 222023688.

The previous prime is 259027619. The next prime is 259027663. The reversal of 259027643 is 346720952.

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

It is a cyclic number.

It is not a de Polignac number, because 259027643 - 2¹⁶ = 258962107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 259027597 and 259027606.

It is not an unprimeable number, because it can be changed into a prime (259027603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18501968 + ... + 18501981.

It is an arithmetic number, because the mean of its divisors is an integer number (74007900).

Almost surely, 2^259027643 is an apocalyptic number.

259027643 is a deficient number, since it is larger than the sum of its proper divisors (37003957).

259027643 is an equidigital number, since it uses as much as digits as its factorization.

259027643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37003956.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 259027643 is about 16094.3357427388. The cubic root of 259027643 is about 637.4537856028.

The spelling of 259027643 in words is "two hundred fifty-nine million, twenty-seven thousand, six hundred forty-three".