1187263 has 16 divisors (see below), whose sum is σ = 1569024. Its totient is φ = 869760.

The previous prime is 1187261. The next prime is 1187279. The reversal of 1187263 is 3627811.

It is a cyclic number.

It is not a de Polignac number, because 1187263 - 2¹ = 1187261 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 (1187261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856 + ... + 1762.

It is an arithmetic number, because the mean of its divisors is an integer number (98064).

2^1187263 is an apocalyptic number.

1187263 is a deficient number, since it is larger than the sum of its proper divisors (381761).

1187263 is a wasteful number, since it uses less digits than its factorization.

1187263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942.

The product of its digits is 2016, while the sum is 28.

The square root of 1187263 is about 1089.6159874011. The cubic root of 1187263 is about 105.8885442942. Note that the first 3 decimals are identical.

It can be divided in two parts, 11872 and 63, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 1187263 in words is "one million, one hundred eighty-seven thousand, two hundred sixty-three".