820604041 has 2 divisors, whose sum is σ = 820604042. Its totient is φ = 820604040.

The previous prime is 820604017. The next prime is 820604087. The reversal of 820604041 is 140406028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729000000 + 91604041 = 27000^2 + 9571^2 .

It is a cyclic number.

It is not a de Polignac number, because 820604041 - 2¹³ = 820595849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 820603997 and 820604015.

It is not a weakly prime, because it can be changed into another prime (820604011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410302020 + 410302021.

It is an arithmetic number, because the mean of its divisors is an integer number (410302021).

Almost surely, 2^820604041 is an apocalyptic number.

It is an amenable number.

820604041 is a deficient number, since it is larger than the sum of its proper divisors (1).

820604041 is an equidigital number, since it uses as much as digits as its factorization.

820604041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 820604041 is about 28646.1871982992. The cubic root of 820604041 is about 936.2199337226.

The spelling of 820604041 in words is "eight hundred twenty million, six hundred four thousand, forty-one".