1161787 has 8 divisors (see below), whose sum is σ = 1308672. Its totient is φ = 1021800.

The previous prime is 1161781. The next prime is 1161791. The reversal of 1161787 is 7871611.

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 1161787 - 2⁷ = 1161659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1161781) 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, 1363 + ... + 2044.

It is an arithmetic number, because the mean of its divisors is an integer number (163584).

2^1161787 is an apocalyptic number.

1161787 is the 682-nd heptagonal number.

1161787 is a deficient number, since it is larger than the sum of its proper divisors (146885).

1161787 is a wasteful number, since it uses less digits than its factorization.

1161787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449.

The product of its digits is 2352, while the sum is 31.

The square root of 1161787 is about 1077.8622360951. The cubic root of 1161787 is about 105.1256847187.

The spelling of 1161787 in words is "one million, one hundred sixty-one thousand, seven hundred eighty-seven".