671825 has 24 divisors (see below), whose sum is σ = 1041600. Its totient is φ = 417600.

The previous prime is 671791. The next prime is 671831. The reversal of 671825 is 528176.

It is a de Polignac number, because none of the positive numbers 2^k-671825 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671825.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1751 + ... + 2099.

It is an arithmetic number, because the mean of its divisors is an integer number (43400).

2⁶⁷¹⁸²⁵ is an apocalyptic number.

It is an amenable number.

671825 is a deficient number, since it is larger than the sum of its proper divisors (369775).

671825 is a wasteful number, since it uses less digits than its factorization.

671825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 372 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 671825 is about 819.6493152562. The cubic root of 671825 is about 87.5827788058.

The spelling of 671825 in words is "six hundred seventy-one thousand, eight hundred twenty-five".