1187266 has 4 divisors (see below), whose sum is σ = 1780902. Its totient is φ = 593632.

The previous prime is 1187261. The next prime is 1187279. The reversal of 1187266 is 6627811.

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., 1010025 + 177241 = 1005^2 + 421^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 296815 + ... + 296818.

2^1187266 is an apocalyptic number.

1187266 is a deficient number, since it is larger than the sum of its proper divisors (593636).

1187266 is an equidigital number, since it uses as much as digits as its factorization.

1187266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593635.

The product of its digits is 4032, while the sum is 31.

The square root of 1187266 is about 1089.6173640320. The cubic root of 1187266 is about 105.8886334812. Note that the first 3 decimals are identical.

The spelling of 1187266 in words is "one million, one hundred eighty-seven thousand, two hundred sixty-six".