869679 has 12 divisors (see below), whose sum is σ = 1274832. Its totient is φ = 571200.

The previous prime is 869663. The next prime is 869683. The reversal of 869679 is 976968.

It is not a de Polignac number, because 869679 - 2⁴ = 869663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869689) 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 11 ways as a sum of consecutive naturals, for example, 42 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (106236).

2⁸⁶⁹⁶⁷⁹ is an apocalyptic number.

869679 is a deficient number, since it is larger than the sum of its proper divisors (405153).

869679 is a wasteful number, since it uses less digits than its factorization.

869679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438 (or 1435 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 869679 is about 932.5658153718. The cubic root of 869679 is about 95.4522846713.

The spelling of 869679 in words is "eight hundred sixty-nine thousand, six hundred seventy-nine".