1660266 has 12 divisors (see below), whose sum is σ = 3597282. Its totient is φ = 553416.

The previous prime is 1660261. The next prime is 1660283. The reversal of 1660266 is 6620661.

It can be written as a sum of positive squares in only one way, i.e., 1476225 + 184041 = 1215^2 + 429^2 .

It is not an unprimeable number, because it can be changed into a prime (1660261) 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 5 ways as a sum of consecutive naturals, for example, 46101 + ... + 46136.

2^1660266 is an apocalyptic number.

1660266 is an abundant number, since it is smaller than the sum of its proper divisors (1937016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660266 is a wasteful number, since it uses less digits than its factorization.

1660266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92245 (or 92242 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1660266 is about 1288.5130965574. The cubic root of 1660266 is about 118.4111388504.

The spelling of 1660266 in words is "one million, six hundred sixty thousand, two hundred sixty-six".