1001266 has 24 divisors (see below), whose sum is σ = 1852956. Its totient is φ = 403200.

The previous prime is 1001237. The next prime is 1001267. The reversal of 1001266 is 6621001.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 108241 = 945^2 + 329^2 .

It is not an unprimeable number, because it can be changed into a prime (1001267) 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 11 ways as a sum of consecutive naturals, for example, 1366 + ... + 1966.

2^1001266 is an apocalyptic number.

1001266 is a deficient number, since it is larger than the sum of its proper divisors (851690).

1001266 is a wasteful number, since it uses less digits than its factorization.

1001266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1001266 is about 1000.6327997822. The cubic root of 1001266 is about 100.0421822041.

Adding to 1001266 its reverse (6621001), we get a palindrome (7622267).

The spelling of 1001266 in words is "one million, one thousand, two hundred sixty-six".