823741 has 2 divisors, whose sum is σ = 823742. Its totient is φ = 823740.

The previous prime is 823729. The next prime is 823747. The reversal of 823741 is 147328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525625 + 298116 = 725^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 823741 - 2⁵ = 823709 is a prime.

823741 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823747) by changing a digit.

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 as a sum of consecutive naturals, namely, 411870 + 411871.

It is an arithmetic number, because the mean of its divisors is an integer number (411871).

2⁸²³⁷⁴¹ is an apocalyptic number.

It is an amenable number.

823741 is a deficient number, since it is larger than the sum of its proper divisors (1).

823741 is an equidigital number, since it uses as much as digits as its factorization.

823741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 823741 is about 907.6017849255. The cubic root of 823741 is about 93.7411393107.

The spelling of 823741 in words is "eight hundred twenty-three thousand, seven hundred forty-one".