846171561 has 8 divisors (see below), whose sum is σ = 1134462784. Its totient is φ = 560997360.

The previous prime is 846171527. The next prime is 846171577. The reversal of 846171561 is 165171648.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 846171561 - 2⁶ = 846171497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846171461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778621 + ... + 779706.

It is an arithmetic number, because the mean of its divisors is an integer number (141807848).

Almost surely, 2^846171561 is an apocalyptic number.

It is an amenable number.

846171561 is a deficient number, since it is larger than the sum of its proper divisors (288291223).

846171561 is a wasteful number, since it uses less digits than its factorization.

846171561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558511.

The product of its digits is 40320, while the sum is 39.

The square root of 846171561 is about 29089.0281893363. The cubic root of 846171561 is about 945.8439167715.

The spelling of 846171561 in words is "eight hundred forty-six million, one hundred seventy-one thousand, five hundred sixty-one".