1266666 has 16 divisors (see below), whose sum is σ = 2558304. Its totient is φ = 418064.

The previous prime is 1266631. The next prime is 1266677. The reversal of 1266666 is 6666621.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nude number because it is divisible by every one of its digits.

1266666 is a modest number, since divided by 6666 gives 126 as remainder.

It is a plaindrome in base 10.

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, 345 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (159894).

2^1266666 is an apocalyptic number.

1266666 is an abundant number, since it is smaller than the sum of its proper divisors (1291638).

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

1266666 is a wasteful number, since it uses less digits than its factorization.

1266666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085.

The product of its digits is 15552, while the sum is 33.

The square root of 1266666 is about 1125.4625715678. The cubic root of 1266666 is about 108.1983665701.

The spelling of 1266666 in words is "one million, two hundred sixty-six thousand, six hundred sixty-six".