260211643 has 4 divisors (see below), whose sum is σ = 261869200. Its totient is φ = 258554088.

The previous prime is 260211607. The next prime is 260211649. The reversal of 260211643 is 346112062.

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 260211643 - 2¹³ = 260203451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260211649) 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, 828543 + ... + 828856.

It is an arithmetic number, because the mean of its divisors is an integer number (65467300).

Almost surely, 2^260211643 is an apocalyptic number.

260211643 is a deficient number, since it is larger than the sum of its proper divisors (1657557).

260211643 is a wasteful number, since it uses less digits than its factorization.

260211643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657556.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 260211643 is about 16131.0769324308. The cubic root of 260211643 is about 638.4235639882.

The spelling of 260211643 in words is "two hundred sixty million, two hundred eleven thousand, six hundred forty-three".