1161087 has 8 divisors (see below), whose sum is σ = 1567104. Its totient is φ = 764568.

The previous prime is 1161077. The next prime is 1161091. The reversal of 1161087 is 7801611.

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

It is not a de Polignac number, because 1161087 - 2¹⁶ = 1095551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161007) 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, 2083 + ... + 2580.

It is an arithmetic number, because the mean of its divisors is an integer number (195888).

2^1161087 is an apocalyptic number.

1161087 is a deficient number, since it is larger than the sum of its proper divisors (406017).

1161087 is an equidigital number, since it uses as much as digits as its factorization.

1161087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 1161087 is about 1077.5374703462. The cubic root of 1161087 is about 105.1045670314.

Adding to 1161087 its reverse (7801611), we get a palindrome (8962698).

The spelling of 1161087 in words is "one million, one hundred sixty-one thousand, eighty-seven".