1187345 has 8 divisors (see below), whose sum is σ = 1444776. Its totient is φ = 936576.

The previous prime is 1187341. The next prime is 1187353. The reversal of 1187345 is 5437811.

It can be written as a sum of positive squares in 4 ways, for example, as 508369 + 678976 = 713^2 + 824^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1187345 - 2² = 1187341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (180597).

2^1187345 is an apocalyptic number.

It is an amenable number.

1187345 is a deficient number, since it is larger than the sum of its proper divisors (257431).

1187345 is an equidigital number, since it uses as much as digits as its factorization.

1187345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331.

The product of its digits is 3360, while the sum is 29.

The square root of 1187345 is about 1089.6536146868. The cubic root of 1187345 is about 105.8909820188.

The spelling of 1187345 in words is "one million, one hundred eighty-seven thousand, three hundred forty-five".