845864 has 8 divisors (see below), whose sum is σ = 1586010. Its totient is φ = 422928.

The previous prime is 845863. The next prime is 845879. The reversal of 845864 is 468548.

It can be written as a sum of positive squares in only one way, i.e., 708964 + 136900 = 842^2 + 370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845864.

It is not an unprimeable number, because it can be changed into a prime (845863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52859 + ... + 52874.

2⁸⁴⁵⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

845864 is a deficient number, since it is larger than the sum of its proper divisors (740146).

845864 is a wasteful number, since it uses less digits than its factorization.

845864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105739 (or 105735 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 845864 is about 919.7086495190. The cubic root of 845864 is about 94.5729306462.

The spelling of 845864 in words is "eight hundred forty-five thousand, eight hundred sixty-four".