1662849 has 14 divisors (see below), whose sum is σ = 2494226. Its totient is φ = 1108080.

The previous prime is 1662841. The next prime is 1662851. The reversal of 1662849 is 9482661.

It can be written as a sum of positive squares in only one way, i.e., 1476225 + 186624 = 1215^2 + 432^2 .

It is not a de Polignac number, because 1662849 - 2³ = 1662841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662841) 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 in 13 ways as a sum of consecutive naturals, for example, 412 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (178159).

2^1662849 is an apocalyptic number.

It is an amenable number.

1662849 is a deficient number, since it is larger than the sum of its proper divisors (831377).

1662849 is an frugal number, since it uses more digits than its factorization.

1662849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2284 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1662849 is about 1289.5150251160. The cubic root of 1662849 is about 118.4725140546.

The spelling of 1662849 in words is "one million, six hundred sixty-two thousand, eight hundred forty-nine".