961111 has 4 divisors (see below), whose sum is σ = 972000. Its totient is φ = 950224.

The previous prime is 961109. The next prime is 961117. The reversal of 961111 is 111169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111169 = 19 ⋅5851.

It is a cyclic number.

It is not a de Polignac number, because 961111 - 2¹ = 961109 is a prime.

It is a Duffinian number.

961111 is a modest number, since divided by 1111 gives 96 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961117) 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, 5311 + ... + 5488.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

2⁹⁶¹¹¹¹ is an apocalyptic number.

961111 is a deficient number, since it is larger than the sum of its proper divisors (10889).

961111 is a wasteful number, since it uses less digits than its factorization.

961111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888.

The product of its digits is 54, while the sum is 19.

The square root of 961111 is about 980.3626879885. The cubic root of 961111 is about 98.6865233248.

The spelling of 961111 in words is "nine hundred sixty-one thousand, one hundred eleven".