1611266 has 4 divisors (see below), whose sum is σ = 2416902. Its totient is φ = 805632.

The previous prime is 1611251. The next prime is 1611289. The reversal of 1611266 is 6621161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 863041 + 748225 = 929^2 + 865^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402815 + ... + 402818.

2^1611266 is an apocalyptic number.

1611266 is a deficient number, since it is larger than the sum of its proper divisors (805636).

1611266 is an equidigital number, since it uses as much as digits as its factorization.

1611266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805635.

The product of its digits is 432, while the sum is 23.

The square root of 1611266 is about 1269.3565299001. The cubic root of 1611266 is about 117.2345842560.

The spelling of 1611266 in words is "one million, six hundred eleven thousand, two hundred sixty-six".