854669 has 4 divisors (see below), whose sum is σ = 862620. Its totient is φ = 846720.

The previous prime is 854647. The next prime is 854683. The reversal of 854669 is 966458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966458 = 2 ⋅483229.

It can be written as a sum of positive squares in 2 ways, for example, as 448900 + 405769 = 670^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 854669 - 2¹⁶ = 789133 is a prime.

It is a super-2 number, since 2×854669² = 1460918199122, 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 (854629) 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, 3812 + ... + 4029.

It is an arithmetic number, because the mean of its divisors is an integer number (215655).

2⁸⁵⁴⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

854669 is a deficient number, since it is larger than the sum of its proper divisors (7951).

854669 is a wasteful number, since it uses less digits than its factorization.

854669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7950.

The product of its digits is 51840, while the sum is 38.

The square root of 854669 is about 924.4830988179. The cubic root of 854669 is about 94.8999500704.

The spelling of 854669 in words is "eight hundred fifty-four thousand, six hundred sixty-nine".