1660041 has 8 divisors (see below), whose sum is σ = 2459360. Its totient is φ = 1106676.

The previous prime is 1660039. The next prime is 1660063. The reversal of 1660041 is 1400661.

1660041 is a `hidden beast` number, since 1 + 660 + 0 + 4 + 1 = 666.

It is not a de Polignac number, because 1660041 - 2¹ = 1660039 is a prime.

It is a super-2 number, since 2×1660041² = 5511472243362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1659996 and 1660023.

It is not an unprimeable number, because it can be changed into a prime (1660741) 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, 30715 + ... + 30768.

It is an arithmetic number, because the mean of its divisors is an integer number (307420).

2^1660041 is an apocalyptic number.

It is an amenable number.

1660041 is a deficient number, since it is larger than the sum of its proper divisors (799319).

1660041 is an equidigital number, since it uses as much as digits as its factorization.

1660041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61492 (or 61486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1660041 is about 1288.4257836600. The cubic root of 1660041 is about 118.4057895650.

It can be divided in two parts, 16600 and 41, that added together give a square (16641 = 129²).

The spelling of 1660041 in words is "one million, six hundred sixty thousand, forty-one".