1087689 has 16 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 685440.

The previous prime is 1087687. The next prime is 1087717. The reversal of 1087689 is 9867801.

It is not a de Polignac number, because 1087689 - 2¹ = 1087687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4432 + ... + 4670.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1087689 is an apocalyptic number.

It is an amenable number.

1087689 is a deficient number, since it is larger than the sum of its proper divisors (444471).

1087689 is a wasteful number, since it uses less digits than its factorization.

1087689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

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

The square root of 1087689 is about 1042.9232953578. The cubic root of 1087689 is about 102.8414628324.

The spelling of 1087689 in words is "one million, eighty-seven thousand, six hundred eighty-nine".