961885 has 4 divisors (see below), whose sum is σ = 1154268. Its totient is φ = 769504.

The previous prime is 961879. The next prime is 961927. The reversal of 961885 is 588169.

961885 = 693² + 694².

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

It can be written as a sum of positive squares in 2 ways, for example, as 480249 + 481636 = 693^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 961885 - 2⁵ = 961853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96184 + ... + 96193.

It is an arithmetic number, because the mean of its divisors is an integer number (288567).

2⁹⁶¹⁸⁸⁵ is an apocalyptic number.

961885 is the 694-th centered square number.

It is an amenable number.

961885 is a deficient number, since it is larger than the sum of its proper divisors (192383).

961885 is a wasteful number, since it uses less digits than its factorization.

961885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192382.

The product of its digits is 17280, while the sum is 37.

The square root of 961885 is about 980.7573604108. The cubic root of 961885 is about 98.7130075616.

The spelling of 961885 in words is "nine hundred sixty-one thousand, eight hundred eighty-five".