291659 has 4 divisors (see below), whose sum is σ = 297216. Its totient is φ = 286104.

The previous prime is 291649. The next prime is 291661. The reversal of 291659 is 956192.

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 291659 - 2¹⁶ = 226123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (291619) 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, 2699 + ... + 2804.

It is an arithmetic number, because the mean of its divisors is an integer number (74304).

2²⁹¹⁶⁵⁹ is an apocalyptic number.

291659 is a deficient number, since it is larger than the sum of its proper divisors (5557).

291659 is an equidigital number, since it uses as much as digits as its factorization.

291659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556.

The product of its digits is 4860, while the sum is 32.

The square root of 291659 is about 540.0546268666. The cubic root of 291659 is about 66.3170390578.

The spelling of 291659 in words is "two hundred ninety-one thousand, six hundred fifty-nine".