870069 has 4 divisors (see below), whose sum is σ = 1160096. Its totient is φ = 580044.

The previous prime is 870059. The next prime is 870083. The reversal of 870069 is 960078.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 870069 - 2¹³ = 861877 is a prime.

It is a super-2 number, since 2×870069² = 1514040129522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870069.

It is not an unprimeable number, because it can be changed into a prime (870049) 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, 145009 + ... + 145014.

It is an arithmetic number, because the mean of its divisors is an integer number (290024).

2⁸⁷⁰⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

870069 is a deficient number, since it is larger than the sum of its proper divisors (290027).

870069 is a wasteful number, since it uses less digits than its factorization.

870069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290026.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 870069 is about 932.7748924580. The cubic root of 870069 is about 95.4665507885.

Subtracting 870069 from its reverse (960078), we obtain a palindrome (90009).

The spelling of 870069 in words is "eight hundred seventy thousand, sixty-nine".