1296166 has 8 divisors (see below), whose sum is σ = 1985760. Its totient is φ = 634248.

The previous prime is 1296143. The next prime is 1296167. The reversal of 1296166 is 6616921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296167) 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 3 ways as a sum of consecutive naturals, for example, 6801 + ... + 6988.

It is an arithmetic number, because the mean of its divisors is an integer number (248220).

2^1296166 is an apocalyptic number.

1296166 is a deficient number, since it is larger than the sum of its proper divisors (689594).

1296166 is a wasteful number, since it uses less digits than its factorization.

1296166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13838.

The product of its digits is 3888, while the sum is 31.

The square root of 1296166 is about 1138.4928633944. The cubic root of 1296166 is about 109.0318903406.

The spelling of 1296166 in words is "one million, two hundred ninety-six thousand, one hundred sixty-six".