846621 has 12 divisors (see below), whose sum is σ = 1287520. Its totient is φ = 534600.

The previous prime is 846589. The next prime is 846647. The reversal of 846621 is 126648.

It is not a de Polignac number, because 846621 - 2⁵ = 846589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2305 + ... + 2646.

2⁸⁴⁶⁶²¹ is an apocalyptic number.

It is an amenable number.

846621 is a deficient number, since it is larger than the sum of its proper divisors (440899).

846621 is a wasteful number, since it uses less digits than its factorization.

846621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4973 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 846621 is about 920.1201008564. The cubic root of 846621 is about 94.6011346925.

Adding to 846621 its sum of digits (27), we get a palindrome (846648).

The spelling of 846621 in words is "eight hundred forty-six thousand, six hundred twenty-one".