840746 has 8 divisors (see below), whose sum is σ = 1292004. Its totient is φ = 410080.

The previous prime is 840743. The next prime is 840757. The reversal of 840746 is 647048.

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 192721 = 805^2 + 439^2 .

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

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (840743) 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, 5045 + ... + 5208.

2⁸⁴⁰⁷⁴⁶ is an apocalyptic number.

840746 is a deficient number, since it is larger than the sum of its proper divisors (451258).

840746 is a wasteful number, since it uses less digits than its factorization.

840746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 840746 is about 916.9220250381. The cubic root of 840746 is about 94.3818030854.

It can be divided in two parts, 840 and 746, that multiplied together give a triangular number (626640 = T₁₁₁₉).

The spelling of 840746 in words is "eight hundred forty thousand, seven hundred forty-six".