834661 has 4 divisors (see below), whose sum is σ = 837612. Its totient is φ = 831712.

The previous prime is 834653. The next prime is 834671. The reversal of 834661 is 166438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166438 = 2 ⋅83219.

It can be written as a sum of positive squares in 2 ways, for example, as 86436 + 748225 = 294^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 834661 - 2³ = 834653 is a prime.

It is a Duffinian number.

834661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834611) 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 3 ways as a sum of consecutive naturals, for example, 1000 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (209403).

2⁸³⁴⁶⁶¹ is an apocalyptic number.

It is an amenable number.

834661 is a deficient number, since it is larger than the sum of its proper divisors (2951).

834661 is a wasteful number, since it uses less digits than its factorization.

834661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950.

The product of its digits is 3456, while the sum is 28.

The square root of 834661 is about 913.5978327470. The cubic root of 834661 is about 94.1535516581.

The spelling of 834661 in words is "eight hundred thirty-four thousand, six hundred sixty-one".