1662041 has 2 divisors, whose sum is σ = 1662042. Its totient is φ = 1662040.

The previous prime is 1662029. The next prime is 1662083. The reversal of 1662041 is 1402661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 10816 = 1285^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662041 - 2⁶ = 1661977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1662341) 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, 831020 + 831021.

It is an arithmetic number, because the mean of its divisors is an integer number (831021).

2^1662041 is an apocalyptic number.

It is an amenable number.

1662041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662041 is an equidigital number, since it uses as much as digits as its factorization.

1662041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1662041 is about 1289.2016909700. The cubic root of 1662041 is about 118.4533218328.

It can be divided in two parts, 16620 and 41, that added together give a palindrome (16661).

The spelling of 1662041 in words is "one million, six hundred sixty-two thousand, forty-one".