959691 has 4 divisors (see below), whose sum is σ = 1279592. Its totient is φ = 639792.

The previous prime is 959689. The next prime is 959719. The reversal of 959691 is 196959.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 959691 - 2¹ = 959689 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 959691.

It is not an unprimeable number, because it can be changed into a prime (959681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159946 + ... + 159951.

It is an arithmetic number, because the mean of its divisors is an integer number (319898).

2⁹⁵⁹⁶⁹¹ is an apocalyptic number.

959691 is a deficient number, since it is larger than the sum of its proper divisors (319901).

959691 is a wasteful number, since it uses less digits than its factorization.

959691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319900.

The product of its digits is 21870, while the sum is 39.

The square root of 959691 is about 979.6381985202. The cubic root of 959691 is about 98.6378976773.

The spelling of 959691 in words is "nine hundred fifty-nine thousand, six hundred ninety-one".