841620 has 72 divisors (see below), whose sum is σ = 2582496. Its totient is φ = 204672.

The previous prime is 841601. The next prime is 841637. The reversal of 841620 is 26148.

It is a congruent number.

It is an unprimeable number.

841620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10099 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (35868).

2⁸⁴¹⁶²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 841620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291248).

841620 is an abundant number, since it is smaller than the sum of its proper divisors (1740876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

841620 is a wasteful number, since it uses less digits than its factorization.

841620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 841620 is about 917.3984957476. The cubic root of 841620 is about 94.4144967203.

Adding to 841620 its reverse (26148), we get a palindrome (867768).

The spelling of 841620 in words is "eight hundred forty-one thousand, six hundred twenty".