80869 has 8 divisors (see below), whose sum is σ = 88128. Its totient is φ = 73920.

The previous prime is 80863. The next prime is 80897. The reversal of 80869 is 96808.

80869 = 12² + 13² + ... + 62².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80869 is a prime.

It is a super-2 number, since 2×80869² = 13079590322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80863) 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 7 ways as a sum of consecutive naturals, for example, 1104 + ... + 1174.

It is an arithmetic number, because the mean of its divisors is an integer number (11016).

2⁸⁰⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

80869 is a deficient number, since it is larger than the sum of its proper divisors (7259).

80869 is a wasteful number, since it uses less digits than its factorization.

80869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 80869 is about 284.3747527471. The cubic root of 80869 is about 43.2441492526.

It can be divided in two parts, 80 and 869, that added together give a palindrome (949).

The spelling of 80869 in words is "eighty thousand, eight hundred sixty-nine".