870669 has 12 divisors (see below), whose sum is σ = 1304576. Its totient is φ = 580284.

The previous prime is 870643. The next prime is 870679. The reversal of 870669 is 966078.

It is not a de Polignac number, because 870669 - 2⁸ = 870413 is a prime.

It is a super-2 number, since 2×870669² = 1516129015122, which contains 22 as substring.

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 (870629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1549 + ... + 2034.

2⁸⁷⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

870669 is a deficient number, since it is larger than the sum of its proper divisors (433907).

870669 is an equidigital number, since it uses as much as digits as its factorization.

870669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 870669 is about 933.0964580364. The cubic root of 870669 is about 95.4884903392.

The spelling of 870669 in words is "eight hundred seventy thousand, six hundred sixty-nine".