671284 has 12 divisors (see below), whose sum is σ = 1181124. Its totient is φ = 333824.

The previous prime is 671269. The next prime is 671287. The reversal of 671284 is 482176.

671284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 459684 + 211600 = 678^2 + 460^2 .

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (98427).

2⁶⁷¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

671284 is a deficient number, since it is larger than the sum of its proper divisors (509840).

671284 is a wasteful number, since it uses less digits than its factorization.

671284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 912 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 671284 is about 819.3192296047. The cubic root of 671284 is about 87.5592632536.

The spelling of 671284 in words is "six hundred seventy-one thousand, two hundred eighty-four".