846521 has 6 divisors (see below), whose sum is σ = 916830. Its totient is φ = 781248.

The previous prime is 846499. The next prime is 846529. The reversal of 846521 is 125648.

It can be written as a sum of positive squares in 3 ways, for example, as 121 + 846400 = 11^2 + 920^2 .

It is not a de Polignac number, because 846521 - 2⁶ = 846457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2336 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (152805).

2⁸⁴⁶⁵²¹ is an apocalyptic number.

It is an amenable number.

846521 is a deficient number, since it is larger than the sum of its proper divisors (70309).

846521 is a wasteful number, since it uses less digits than its factorization.

846521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035 (or 5022 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 846521 is about 920.0657585195. The cubic root of 846521 is about 94.5974098908.

The spelling of 846521 in words is "eight hundred forty-six thousand, five hundred twenty-one".