1089687 has 8 divisors (see below), whose sum is σ = 1492336. Its totient is φ = 706752.

The previous prime is 1089679. The next prime is 1089703. The reversal of 1089687 is 7869801.

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

It is not a de Polignac number, because 1089687 - 2³ = 1089679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089677) 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, 4798 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (186542).

2^1089687 is an apocalyptic number.

1089687 is a deficient number, since it is larger than the sum of its proper divisors (402649).

1089687 is an equidigital number, since it uses as much as digits as its factorization.

1089687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1089687 is about 1043.8807403147. The cubic root of 1089687 is about 102.9043949009.

The spelling of 1089687 in words is "one million, eighty-nine thousand, six hundred eighty-seven".