1158266 has 4 divisors (see below), whose sum is σ = 1737402. Its totient is φ = 579132.

The previous prime is 1158263. The next prime is 1158271. The reversal of 1158266 is 6628511.

It is a happy number.

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., 697225 + 461041 = 835^2 + 679^2 .

It is not an unprimeable number, because it can be changed into a prime (1158263) 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 as a sum of consecutive naturals, namely, 289565 + ... + 289568.

2^1158266 is an apocalyptic number.

1158266 is a deficient number, since it is larger than the sum of its proper divisors (579136).

1158266 is an equidigital number, since it uses as much as digits as its factorization.

1158266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579135.

The product of its digits is 2880, while the sum is 29.

The square root of 1158266 is about 1076.2276710808. The cubic root of 1158266 is about 105.0193766206.

The spelling of 1158266 in words is "one million, one hundred fifty-eight thousand, two hundred sixty-six".