1187713 has 4 divisors (see below), whose sum is σ = 1193940. Its totient is φ = 1181488.

The previous prime is 1187707. The next prime is 1187717. The reversal of 1187713 is 3177811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1140624 + 47089 = 1068^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187713 - 2⁹ = 1187201 is a prime.

It is a Duffinian number.

1187713 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1187717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818 + ... + 3211.

It is an arithmetic number, because the mean of its divisors is an integer number (298485).

2^1187713 is an apocalyptic number.

It is an amenable number.

1187713 is a deficient number, since it is larger than the sum of its proper divisors (6227).

1187713 is an equidigital number, since it uses as much as digits as its factorization.

1187713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226.

The product of its digits is 1176, while the sum is 28.

The square root of 1187713 is about 1089.8224626057. The cubic root of 1187713 is about 105.9019206694.

The spelling of 1187713 in words is "one million, one hundred eighty-seven thousand, seven hundred thirteen".