1660241 has 6 divisors (see below), whose sum is σ = 1825026. Its totient is φ = 1509200.

The previous prime is 1660231. The next prime is 1660247. The reversal of 1660241 is 1420661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 450241 = 1100^2 + 671^2 .

It is not a de Polignac number, because 1660241 - 2⁶ = 1660177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1660247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6740 + ... + 6981.

It is an arithmetic number, because the mean of its divisors is an integer number (304171).

2^1660241 is an apocalyptic number.

1660241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1660241 is a deficient number, since it is larger than the sum of its proper divisors (164785).

1660241 is a wasteful number, since it uses less digits than its factorization.

1660241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13743 (or 13732 counting only the distinct ones).

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

The square root of 1660241 is about 1288.5033954166. The cubic root of 1660241 is about 118.4105445092.

The spelling of 1660241 in words is "one million, six hundred sixty thousand, two hundred forty-one".