1266081 has 16 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 791120.

The previous prime is 1266079. The next prime is 1266091. The reversal of 1266081 is 1806621.

It is a cyclic number.

It is not a de Polignac number, because 1266081 - 2¹ = 1266079 is a prime.

It is a super-2 number, since 2×1266081² = 3205922197122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1266091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3916 + ... + 4226.

It is an arithmetic number, because the mean of its divisors is an integer number (112320).

2^1266081 is an apocalyptic number.

It is an amenable number.

1266081 is a deficient number, since it is larger than the sum of its proper divisors (531039).

1266081 is a wasteful number, since it uses less digits than its factorization.

1266081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1266081 is about 1125.2026484149. The cubic root of 1266081 is about 108.1817071426.

The spelling of 1266081 in words is "one million, two hundred sixty-six thousand, eighty-one".