261741 has 8 divisors (see below), whose sum is σ = 357280. Its totient is φ = 170352.

The previous prime is 261739. The next prime is 261757. The reversal of 261741 is 147162.

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

It is not a de Polignac number, because 261741 - 2¹ = 261739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261721) 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, 886 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (44660).

2²⁶¹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

261741 is a deficient number, since it is larger than the sum of its proper divisors (95539).

261741 is a wasteful number, since it uses less digits than its factorization.

261741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its digits is 336, while the sum is 21.

The square root of 261741 is about 511.6062939410. The cubic root of 261741 is about 63.9671869555.

The spelling of 261741 in words is "two hundred sixty-one thousand, seven hundred forty-one".