887609 has 4 divisors (see below), whose sum is σ = 909300. Its totient is φ = 865920.

The previous prime is 887599. The next prime is 887617. The reversal of 887609 is 906788.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160000 + 727609 = 400^2 + 853^2 .

It is a de Polignac number, because none of the positive numbers 2^k-887609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10784 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (227325).

2⁸⁸⁷⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

887609 is a deficient number, since it is larger than the sum of its proper divisors (21691).

887609 is a wasteful number, since it uses less digits than its factorization.

887609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21690.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 887609 is about 942.1300334879. The cubic root of 887609 is about 96.1038012070.

The spelling of 887609 in words is "eight hundred eighty-seven thousand, six hundred nine".