1266466 has 12 divisors (see below), whose sum is σ = 2021922. Its totient is φ = 592896.

The previous prime is 1266451. The next prime is 1266469. The reversal of 1266466 is 6646621.

1266466 = T₁₅₈ + T₁₅₉ + ... + T₂₂₅.

It can be written as a sum of positive squares in 3 ways, for example, as 958441 + 308025 = 979^2 + 555^2 .

It is a super-4 number, since 4×1266466⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266469) 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, 6466 + ... + 6658.

2^1266466 is an apocalyptic number.

1266466 is a deficient number, since it is larger than the sum of its proper divisors (755456).

1266466 is an equidigital number, since it uses as much as digits as its factorization.

1266466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 212 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 1266466 is about 1125.3737157051. The cubic root of 1266466 is about 108.1926716165.

The spelling of 1266466 in words is "one million, two hundred sixty-six thousand, four hundred sixty-six".