1161266 has 4 divisors (see below), whose sum is σ = 1741902. Its totient is φ = 580632.

The previous prime is 1161263. The next prime is 1161269. The reversal of 1161266 is 6621611.

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

It is an interprime number because it is at equal distance from previous prime (1161263) and next prime (1161269).

It can be written as a sum of positive squares in only one way, i.e., 765625 + 395641 = 875^2 + 629^2 .

It is not an unprimeable number, because it can be changed into a prime (1161263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290315 + ... + 290318.

2^1161266 is an apocalyptic number.

1161266 is a deficient number, since it is larger than the sum of its proper divisors (580636).

1161266 is an equidigital number, since it uses as much as digits as its factorization.

1161266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580635.

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

The square root of 1161266 is about 1077.6205269017. The cubic root of 1161266 is about 105.1099679332.

Adding to 1161266 its reverse (6621611), we get a palindrome (7782877).

The spelling of 1161266 in words is "one million, one hundred sixty-one thousand, two hundred sixty-six".