841861 has 8 divisors (see below), whose sum is σ = 881144. Its totient is φ = 803520.

The previous prime is 841859. The next prime is 841873. The reversal of 841861 is 168148.

841861 = 68² + 69² + ... + 141².

It can be written as a sum of positive squares in 4 ways, for example, as 93636 + 748225 = 306^2 + 865^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 841861 - 2¹ = 841859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2071 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (110143).

2⁸⁴¹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

841861 is a deficient number, since it is larger than the sum of its proper divisors (39283).

841861 is a wasteful number, since it uses less digits than its factorization.

841861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471.

The product of its digits is 1536, while the sum is 28.

The square root of 841861 is about 917.5298360271. The cubic root of 841861 is about 94.4235078030.

The spelling of 841861 in words is "eight hundred forty-one thousand, eight hundred sixty-one".