847161 has 36 divisors (see below), whose sum is σ = 1520532. Its totient is φ = 451584.

The previous prime is 847157. The next prime is 847163. The reversal of 847161 is 161748.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 275625 + 571536 = 525^2 + 756^2 .

It is not a de Polignac number, because 847161 - 2² = 847157 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847161.

It is not an unprimeable number, because it can be changed into a prime (847163) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7441 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (42237).

2⁸⁴⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

847161 is a deficient number, since it is larger than the sum of its proper divisors (673371).

847161 is a wasteful number, since it uses less digits than its factorization.

847161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 140 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 847161 is about 920.4134940341. The cubic root of 847161 is about 94.6212435549.

The spelling of 847161 in words is "eight hundred forty-seven thousand, one hundred sixty-one".