867669 has 8 divisors (see below), whose sum is σ = 1262112. Its totient is φ = 525840.

The previous prime is 867653. The next prime is 867677. The reversal of 867669 is 966768.

It is a happy number.

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

It is not a de Polignac number, because 867669 - 2⁴ = 867653 is a prime.

It is a super-2 number, since 2×867669² = 1505698987122, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 867669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13114 + ... + 13179.

It is an arithmetic number, because the mean of its divisors is an integer number (157764).

2⁸⁶⁷⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

867669 is a deficient number, since it is larger than the sum of its proper divisors (394443).

867669 is a wasteful number, since it uses less digits than its factorization.

867669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26307.

The product of its digits is 108864, while the sum is 42.

The square root of 867669 is about 931.4875200452. The cubic root of 867669 is about 95.3786915829.

Subtracting 867669 from its reverse (966768), we obtain a palindrome (99099).

The spelling of 867669 in words is "eight hundred sixty-seven thousand, six hundred sixty-nine".