262641 has 4 divisors (see below), whose sum is σ = 350192. Its totient is φ = 175092.

The previous prime is 262627. The next prime is 262643. The reversal of 262641 is 146262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 262641 - 2⁷ = 262513 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 6³ + 6³ + 2¹⁷ + 4³ + 1 .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (262643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43771 + ... + 43776.

It is an arithmetic number, because the mean of its divisors is an integer number (87548).

2²⁶²⁶⁴¹ is an apocalyptic number.

It is an amenable number.

262641 is a deficient number, since it is larger than the sum of its proper divisors (87551).

262641 is an equidigital number, since it uses as much as digits as its factorization.

262641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87550.

The product of its digits is 576, while the sum is 21.

The square root of 262641 is about 512.4851217353. The cubic root of 262641 is about 64.0404204299.

It can be divided in two parts, 262 and 641, that added together give a triangular number (903 = T₄₂).

The spelling of 262641 in words is "two hundred sixty-two thousand, six hundred forty-one".