1266901 has 8 divisors (see below), whose sum is σ = 1346400. Its totient is φ = 1188720.

The previous prime is 1266899. The next prime is 1266913. The reversal of 1266901 is 1096621.

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

It is a cyclic number.

It is not a de Polignac number, because 1266901 - 2¹ = 1266899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266931) 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 7 ways as a sum of consecutive naturals, for example, 2235 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (168300).

2^1266901 is an apocalyptic number.

It is an amenable number.

1266901 is a deficient number, since it is larger than the sum of its proper divisors (79499).

1266901 is a wasteful number, since it uses less digits than its factorization.

1266901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1266901 is about 1125.5669682431. The cubic root of 1266901 is about 108.2050573747.

The spelling of 1266901 in words is "one million, two hundred sixty-six thousand, nine hundred one".