961871 has 2 divisors, whose sum is σ = 961872. Its totient is φ = 961870.

The previous prime is 961861. The next prime is 961879. The reversal of 961871 is 178169.

It is a strong prime.

It is an emirp because it is prime and its reverse (178169) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961879) by changing a digit.

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 as a sum of consecutive naturals, namely, 480935 + 480936.

It is an arithmetic number, because the mean of its divisors is an integer number (480936).

2⁹⁶¹⁸⁷¹ is an apocalyptic number.

961871 is a deficient number, since it is larger than the sum of its proper divisors (1).

961871 is an equidigital number, since it uses as much as digits as its factorization.

961871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 961871 is about 980.7502230436. The cubic root of 961871 is about 98.7125286448.

The spelling of 961871 in words is "nine hundred sixty-one thousand, eight hundred seventy-one".