1266836 has 24 divisors (see below), whose sum is σ = 2341920. Its totient is φ = 598752.

The previous prime is 1266799. The next prime is 1266841. The reversal of 1266836 is 6386621.

1266836 = T₁₆₀ + T₁₆₁ + ... + T₂₂₆.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7691 + ... + 7853.

It is an arithmetic number, because the mean of its divisors is an integer number (97580).

2^1266836 is an apocalyptic number.

It is an amenable number.

1266836 is a deficient number, since it is larger than the sum of its proper divisors (1075084).

1266836 is a wasteful number, since it uses less digits than its factorization.

1266836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1266836 is about 1125.5380935357. The cubic root of 1266836 is about 108.2032068094.

The spelling of 1266836 in words is "one million, two hundred sixty-six thousand, eight hundred thirty-six".