870011 has 4 divisors (see below), whose sum is σ = 876000. Its totient is φ = 864024.

The previous prime is 870007. The next prime is 870013. The reversal of 870011 is 110078.

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

It is a cyclic number.

It is not a de Polignac number, because 870011 - 2² = 870007 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870011.

It is not an unprimeable number, because it can be changed into a prime (870013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771 + ... + 3068.

It is an arithmetic number, because the mean of its divisors is an integer number (219000).

2⁸⁷⁰⁰¹¹ is an apocalyptic number.

870011 is a deficient number, since it is larger than the sum of its proper divisors (5989).

870011 is a wasteful number, since it uses less digits than its factorization.

870011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 870011 is about 932.7438019092. The cubic root of 870011 is about 95.4644294307.

Adding to 870011 its reverse (110078), we get a palindrome (980089).

The spelling of 870011 in words is "eight hundred seventy thousand, eleven".