1161687 has 8 divisors (see below), whose sum is σ = 1553904. Its totient is φ = 771968.

The previous prime is 1161683. The next prime is 1161691. The reversal of 1161687 is 7861611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1161683) and next prime (1161691).

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 1161687 - 2² = 1161683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161683) 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 7 ways as a sum of consecutive naturals, for example, 1453 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (194238).

2^1161687 is an apocalyptic number.

1161687 is a deficient number, since it is larger than the sum of its proper divisors (392217).

1161687 is an equidigital number, since it uses as much as digits as its factorization.

1161687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249.

The product of its digits is 2016, while the sum is 30.

The square root of 1161687 is about 1077.8158469794. The cubic root of 1161687 is about 105.1226684256.

The spelling of 1161687 in words is "one million, one hundred sixty-one thousand, six hundred eighty-seven".