291696 has 40 divisors (see below), whose sum is σ = 773760. Its totient is φ = 94656.

The previous prime is 291691. The next prime is 291701. The reversal of 291696 is 696192.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (291691) and next prime (291701).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291696.

It is not an unprimeable number, because it can be changed into a prime (291691) 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, 2781 + ... + 2883.

It is an arithmetic number, because the mean of its divisors is an integer number (19344).

2²⁹¹⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386880).

291696 is an abundant number, since it is smaller than the sum of its proper divisors (482064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291696 is a wasteful number, since it uses less digits than its factorization.

291696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 167 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 291696 is about 540.0888815741. The cubic root of 291696 is about 66.3198432763.

Subtracting 291696 from its reverse (696192), we obtain a square (404496 = 636²).

It can be divided in two parts, 2916 and 96, that multiplied together give a 7-th power (279936 = 6⁷).

The spelling of 291696 in words is "two hundred ninety-one thousand, six hundred ninety-six".