846649 has 4 divisors (see below), whose sum is σ = 852880. Its totient is φ = 840420.

The previous prime is 846647. The next prime is 846661. The reversal of 846649 is 946648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 846649 - 2¹ = 846647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846647) 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, 2907 + ... + 3184.

It is an arithmetic number, because the mean of its divisors is an integer number (213220).

2⁸⁴⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

846649 is a deficient number, since it is larger than the sum of its proper divisors (6231).

846649 is a wasteful number, since it uses less digits than its factorization.

846649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230.

The product of its digits is 41472, while the sum is 37.

The square root of 846649 is about 920.1353161356. The cubic root of 846649 is about 94.6021775844.

Subtracting 846649 from its reverse (946648), we obtain a palindrome (99999).

It can be divided in two parts, 8466 and 49, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 846649 in words is "eight hundred forty-six thousand, six hundred forty-nine".