845672 has 16 divisors (see below), whose sum is σ = 1629060. Its totient is φ = 411264.

The previous prime is 845659. The next prime is 845683. The reversal of 845672 is 276548.

It can be written as a sum of positive squares in 2 ways, for example, as 763876 + 81796 = 874^2 + 286^2 .

It is a super-2 number, since 2×845672² = 1430322263168, which contains 22 as substring.

It is an unprimeable number.

845672 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 1724.

2⁸⁴⁵⁶⁷² is an apocalyptic number.

It is an amenable number.

845672 is a deficient number, since it is larger than the sum of its proper divisors (783388).

845672 is a wasteful number, since it uses less digits than its factorization.

845672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900 (or 2896 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 845672 is about 919.6042627130. The cubic root of 845672 is about 94.5657745010.

The spelling of 845672 in words is "eight hundred forty-five thousand, six hundred seventy-two".