870011069 has 4 divisors (see below), whose sum is σ = 877710396. Its totient is φ = 862311744.

The previous prime is 870011047. The next prime is 870011089. The reversal of 870011069 is 960110078.

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 26399044 + 843612025 = 5138^2 + 29045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870011069 is a prime.

It is a super-2 number, since 2×870011069² = 1513838520365045522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870011029) 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, 3849494 + ... + 3849719.

It is an arithmetic number, because the mean of its divisors is an integer number (219427599).

Almost surely, 2^870011069 is an apocalyptic number.

It is an amenable number.

870011069 is a deficient number, since it is larger than the sum of its proper divisors (7699327).

870011069 is a wasteful number, since it uses less digits than its factorization.

870011069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7699326.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 870011069 is about 29495.9500440315. The cubic root of 870011069 is about 954.6443195446.

Subtracting 870011069 from its reverse (960110078), we obtain a palindrome (90099009).

The spelling of 870011069 in words is "eight hundred seventy million, eleven thousand, sixty-nine".