261067 has 4 divisors (see below), whose sum is σ = 264816. Its totient is φ = 257320.

The previous prime is 261061. The next prime is 261071. The reversal of 261067 is 760162.

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 261067 - 2³ = 261059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261061) 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, 1768 + ... + 1909.

It is an arithmetic number, because the mean of its divisors is an integer number (66204).

2²⁶¹⁰⁶⁷ is an apocalyptic number.

261067 is a deficient number, since it is larger than the sum of its proper divisors (3749).

261067 is an equidigital number, since it uses as much as digits as its factorization.

261067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 261067 is about 510.9471596946. The cubic root of 261067 is about 63.9122332111.

The spelling of 261067 in words is "two hundred sixty-one thousand, sixty-seven".